Razzak, Md. Abdur; Rahman, M. Saifur; Roy, K. C.; Ikramul Haque, B. M.; Alam, M. S. An analytical technique to find approximate solutions of nonlinear non-oscillatory systems. (English) Zbl 1433.34076 Bull. Calcutta Math. Soc. 105, No. 3, 155-176 (2013). MSC: 34E10 PDFBibTeX XMLCite \textit{Md. A. Razzak} et al., Bull. Calcutta Math. Soc. 105, No. 3, 155--176 (2013; Zbl 1433.34076) Full Text: Link
Azad, A. K.; Alal Hosen, M.; Saifur Rahman, M.; Alam, M. S. A perturbation technique to compute initial amplitude and phase for the Krylov-Bogoliubov-Mitropolskii method. (English) Zbl 1262.34065 Tamkang J. Math. 43, No. 4, 563-575 (2012). MSC: 34E10 34C15 34A45 PDFBibTeX XMLCite \textit{A. K. Azad} et al., Tamkang J. Math. 43, No. 4, 563--575 (2012; Zbl 1262.34065) Full Text: Link
Azad, M. Abul Kalam; Alam, M. Shamsul; Rahman, M. Saifur; Sarker, Bimolendu Shekhar A general multiple-time-scale method for solving an \(n\)-th order weakly nonlinear differential equation with damping. (English) Zbl 1231.34097 Commun. Korean Math. Soc. 26, No. 4, 695-708 (2011). MSC: 34E05 34E10 34E13 34C15 PDFBibTeX XMLCite \textit{M. A. K. Azad} et al., Commun. Korean Math. Soc. 26, No. 4, 695--708 (2011; Zbl 1231.34097) Full Text: DOI
Ali Akbar, M.; Shamsul Alam, M.; Shanta, S. S.; Sharif Uddin, M.; Samsuzzoha, M. Perturbation method for fourth order nonlinear systems with large damping. (English) Zbl 1391.34092 Bull. Calcutta Math. Soc. 100, No. 1, 85-92 (2008). MSC: 34E10 70K60 PDFBibTeX XMLCite \textit{M. Ali Akbar} et al., Bull. Calcutta Math. Soc. 100, No. 1, 85--92 (2008; Zbl 1391.34092)
Kalam Azad, Md. Abul; Haque, Emdadul; Shamsul Alam, M. A new perturbation technique for critically damped nonlinear systems. (English) Zbl 1157.34046 Soochow J. Math. 33, No. 4, 669-677 (2007). Reviewer: Vasile Dragan (Bucureşti) MSC: 34E10 34E05 34A12 65L05 65L20 PDFBibTeX XMLCite \textit{Md. A. Kalam Azad} et al., Soochow J. Math. 33, No. 4, 669--677 (2007; Zbl 1157.34046)
Akbar, M. Ali; Alam, M. Shamsul; Sattar, M. A. KBM unified method for solving an \(n\)th order non-linear differential equation under some special conditions including the case of internal resonance. (English) Zbl 1160.34339 Int. J. Non-Linear Mech. 41, No. 1, 26-42 (2006). MSC: 34E10 34C15 PDFBibTeX XMLCite \textit{M. A. Akbar} et al., Int. J. Non-Linear Mech. 41, No. 1, 26--42 (2006; Zbl 1160.34339) Full Text: DOI
Akbar, M. Ali; Shamsul Alam, M.; Sattar, M. A. A simple technique for obtaining certain over-damped solutions of an \(n\)-th order nonlinear differential equation. (English) Zbl 1072.34051 Soochow J. Math. 31, No. 2, 291-299 (2005). MSC: 34E05 34E10 PDFBibTeX XMLCite \textit{M. A. Akbar} et al., Soochow J. Math. 31, No. 2, 291--299 (2005; Zbl 1072.34051)
Shamsul Alam, M. Perturbation theory for third-order nonlinear differential system with damping. (English) Zbl 1072.34053 Soochow J. Math. 31, No. 1, 5-20 (2005). MSC: 34E05 34E10 PDFBibTeX XMLCite \textit{M. Shamsul Alam}, Soochow J. Math. 31, No. 1, 5--20 (2005; Zbl 1072.34053)
Alam, M. Shamsul Unified Krylov-Bogoliubov-mitropolskii method for solving \(n\)th order non-linear systems with slowly varying coefficients. (English) Zbl 1236.34081 J. Sound Vib. 265, No. 5, 987-1002 (2003). MSC: 34E10 PDFBibTeX XMLCite \textit{M. S. Alam}, J. Sound Vib. 265, No. 5, 987--1002 (2003; Zbl 1236.34081) Full Text: DOI
Alam, M. Shamsul Perturbation theory for critically damped nonlinear systems. (English) Zbl 1021.34044 Southeast Asian Bull. Math. 26, No. 1, 1-13 (2002). Reviewer: Igor Andrianov (Köln) MSC: 34E05 34E10 34C29 PDFBibTeX XMLCite \textit{M. S. Alam}, Southeast Asian Bull. Math. 26, No. 1, 1--13 (2002; Zbl 1021.34044) Full Text: DOI
Alam, M. Shamsul Perturbation theory for \(n\)th-order nonlinear systems with large damping. (English) Zbl 1020.34045 Indian J. Pure Appl. Math. 33, No. 11, 1677-1684 (2002). MSC: 34E10 PDFBibTeX XMLCite \textit{M. S. Alam}, Indian J. Pure Appl. Math. 33, No. 11, 1677--1684 (2002; Zbl 1020.34045)
Alam, M. Shamsul Bogoliubov’s method for third-order critically damped nonlinear systems. (English) Zbl 1009.34049 Soochow J. Math. 28, No. 1, 65-80 (2002). Reviewer: R.S.Dahiya (Ames) MSC: 34E10 PDFBibTeX XMLCite \textit{M. S. Alam}, Soochow J. Math. 28, No. 1, 65--80 (2002; Zbl 1009.34049)
Alam, M. Shamsul Perturbation theory for nonlinear systems with large damping. (English) Zbl 1009.34048 Indian J. Pure Appl. Math. 32, No. 10, 1453-1461 (2001). MSC: 34E10 PDFBibTeX XMLCite \textit{M. S. Alam}, Indian J. Pure Appl. Math. 32, No. 10, 1453--1461 (2001; Zbl 1009.34048)
Alam, M. Shamsul Asymptotic methods for second-order over-damped and critically damped nonlinear systems. (English) Zbl 1054.34090 Soochow J. Math. 27, No. 2, 187-200 (2001). Reviewer: E. Ya. Gorelova (Samara) MSC: 34E10 PDFBibTeX XMLCite \textit{M. S. Alam}, Soochow J. Math. 27, No. 2, 187--200 (2001; Zbl 1054.34090)
Alam, M. Shamsul; Sattar, M. A. An asymptotic method for third order critically damped nonlinear equations. (English) Zbl 0939.65095 J. Math. Phys. Sci. 30, No. 6, 291-298 (1996). MSC: 65L05 34E10 65L06 34A34 PDFBibTeX XMLCite \textit{M. S. Alam} and \textit{M. A. Sattar}, J. Math. Phys. Sci. 30, No. 6, 291--298 (1996; Zbl 0939.65095)