yaishnavee a/p ravi, nur ain najihah binti mohd rosdi, nadirah abd hamid, hukil sino, loong chuen lee.  (2023).  comparison of gap-segment and savitzky-golay algorithms in forensic discrimination of soils based on ultra-performance liquid chromatography data.  - journal of analytical chemistry.  1398-1405. 

norazwani binti ali, loong chuen lee, and ab aziz ishak.  (2022).  evaluation of row-wise manipulations for the forensic differentiation of malaysian soils based on ultra-performance liquid chromatographic profiles.  - journal of analytical chemistry.  347-360. 

loong chuen lee, ab aziz ishak, ameeta a/p nai eyan, anas fahmi zakaria, nurul syahiera kharudin, nor azman mohd noor.  (2022).  forensic profiling of non-volatile organic compounds in soil using ultra-performance liquid chromatography: a pilot study.  - forensic science research.  761-773. 

md gezani md ghazi, loong chuen lee, hukil sino, mohamed izzharif abdul halim.  (2022).  review of contemporary chemometric strategies applied on preparing gcms data in forensic analysis.  - microchemical journal.  1-13. 

md gezani bin md ghazi, loong chuen lee, aznor sheda binti samsudin, hukil sino.  (2022).  evaluation of ensemble data preprocessing strategy on forensic gasoline classification using untargeted gcms data and classification and regression tree (cart) algorithm.  - microchemical journal.  1-11. 

loong chuen lee, nur izzati bohari, siti norfaraan abd sanih, muhammad yusuf adam.  (2022).  forensic fingerprint analysis using self-organizing maps, classification and regression trees and naïve bayes methods.  - international journal of computing and digital systems.  1479-1490. 

loong chuen lee, ab aziz ishak, nadirah abdul hamid, yaishnavee ravi, muhamad adib ahmad and norazwani ali.  (2021).  a comparison between univariate and multivariate statistical techniques to determine source of pen inks using ultra-performance liquid chromatography (uplc) chromatograms.  - journal of liquid chromatography & related technologies.  1-11. 

lee loong chuen, abdul aziz jemain.  (2021).  on overview of pca application strategy in processing high dimensionality forensic data.  - microchemical journal.  1-16. 

lee loong chuen.  (2021).  a study to explore discriminative power of atr-ftir spectroscopy for forensic paper analysis using decision tree method.  - journal of analytical chemistry.  95-101. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2019).  statistical comparison of decision rules in pls2-da prediction model for classification of blue gel pen inks according to pen brand and pen model.  - chemometrics and intelligent laboratory systems.  . 

loong chuen lee, wan nur syazwani wan mohamad fuad, sharifah shakilah abdullah and kay loke ong.  (2019).  preliminary study on morphometric analysis of the human scalp hair for discrimination of ethnic malay and ethnic chinese in malaysia.  - egyptian journal of forensic sciences.  1-6. 

lee loong chuen, abdul aziz jemain.  (2019).  predictive modelling of colossal atr-ftir spectral data using pls-da: empirical differences between pls1-da and pls2-da algorithms.  - analyst.  2670-2678. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2018).  validity of the best practice in splitting data for hold-out validation strategy as performed on the ink strokes in the context of forensic science.  - microchemical journal.  . 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2018).  effects of data pre-processing methods on classification of atr-ftir spectra of pen inks using partial least squares-discriminant analysis (pls-da).  - chemometrics and intelligent laboratory systems.  . 

loong chuen lee, choong-yeun liong and abdul aziz jemain.  (2018).  partial least squares-discriminant analysis (pls-da) for classification of high-dimensional (hd) data: a review of contemporary practice strategies and knowledge gaps.  - analyst.  . 

lee, l. c., liong, c-y., khairul, o., jemain, a. a..  (2017).  effects of baseline correction algorithms on forensic classification of paper based on atr-ftir spectrum and principal component analysis (pca).  - pertanika science and technology.  767-774. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2017).  a contemporary review on data preprocessing (dp) practice strategy in atr-ftir spectrum.  - chemometrics and intelligent laboratory systems.  64-75. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2016).  applying fourier-transform infrared spectroscopy and self-organizing maps for forensic classification of white-copy papers.  - international journal on advanced science, engineering and information technology.  1033-1039. 

loong chuen lee*, muhammad ismail ab samad, and mohamad azlan mohd ismail.  (2016).  nondestructive classification and identification of ballpoint pen inks by raman spectroscopy for forensic document examinations.  - journal of analytical chemistry.  723-729. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2016).  correspondence regarding the article "discrimination of various paper types using diffuse reflectance ultraviolet-visible-near-infrared spectroscopy: [appl.spectrosc. 2015.69(6): 714-720].  - applied spectroscopy.  1598-1601. 

loong chuen lee, seow lay ying, wan nur syazwani wan mohamad fuad, ab aziz ishak, khairul osman.  (2016).  fast and simple forensic red pen ink analysis using ultra-performance liquid chromatography (uplc).  - malaysian journal of analytical sciences,.  224-230. 

loong chuen lee, intan shafiqa md yunus, wan nur syazwani wan mohamad fuad, ab aziz ishak, khairul osman.  (2015).  statistical discrimination of black ballpoint pen inks using ultra-performance liquid chromatography with principal component analysis.  - journal of analytical chemistry.  374-377. 

loong chuen lee, karldiv tarvin singh shandu, nor syahirah mohamad razi, ab aziz ishak, khairul osman.  (2015).  forensic analysis of blue ballpoint pen inks using ultraviolet-visible spectrometer and ultra-performance liquid chromatograph.  - malaysian journal of analytical sciences.  397 - 401. 

loong chuen lee, eng leng lee, ab aziz ishak.  (2014).  feasibility of high performance thin layer chromatography for the forensic analysis of red ballpoint pen inks.  - problems of forensic sciences.  14-22. 

loong chuen lee, sitti mariam nunurung, ab aziz ishak.  (2014).  forensic analysis of blue ballpoint pen inks on questioned documents by high performance thin layer chromatography technique (hptlc).  - malaysian journal of analytical sciences.  226-233. 

l.c. lee, mohamed rozali othman, h. pua.  (2012).  systematic assessment of attenuated total reflectance-fourier transforms infrared spectroscopy coupled with multivariate analysis for forensic analysis of black ballpoint pen inks.  - the malaysian journal of analytical sciences.  16(3):262-272.