M. Shamsul Alam, Md. Abul Kalam Azad, Kamalesh Chandra Roy, M. Majedur Rahman. nth order nonlinear differential equation when the corresponding unperturbed equation has some repeated eigenvalues. J. Franklin Institute, 346(2):112-125, 2009. [doi]
@article{AlamARR09,
title = {nth order nonlinear differential equation when the corresponding unperturbed equation has some repeated eigenvalues},
author = {M. Shamsul Alam and Md. Abul Kalam Azad and Kamalesh Chandra Roy and M. Majedur Rahman},
year = {2009},
doi = {10.1016/j.jfranklin.2008.06.010},
url = {https://doi.org/10.1016/j.jfranklin.2008.06.010},
researchr = {https://researchr.org/publication/AlamARR09},
cites = {0},
citedby = {0},
journal = {J. Franklin Institute},
volume = {346},
number = {2},
pages = {112-125},
}