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roslinda mohd nazar, lee khai chien, norazak bin senu, ali ahmadian.  (2024).  a promising exponentially-fitted two-derivative runge-kutta-nyström method for solving y'=f(x,y): application to verhulst logistic growth model.  - mathematics and computers in simulation.  28-49. 

khai chien lee, muhammad naeim mohd aris, ishak hashim, norazak senu.  (2024).  proficient trigonometrical-fitted two-derivative multistep collocation methods in predictor-corrector approach: application to perturbed kepler problem.  - methodsx .  1 - 23. 

lee khai chien, mohd almie alias, norazak senu, ali ahmadian hosseini.  (2023).  on efficient frequency-dependent parameters of explicit two-derivative improved runge-kutta-nystrom method with application to two-body problem.  - alexandria engineering journal.  605-620.