Ullah MW, Uddin MA, Rahman MS. ANALYTICAL SOLUTION OF MODIFIED FORCED VAN DER POL VIBRATION EQUATION USING MODIFIED HARMONIC BALANCE METHOD. Khulna Univ. Stud. [Internet]. 2022 Nov. 24 [cited 2026 Apr. 24];:892-903. Available from: https://kus.ku.ac.bd/kustudies/article/view/913