id	keyword
ejpam-6462	order
ejpam-6462	hpm
ejpam-6462	equations
ejpam-6462	method
ejpam-6462	differential
ejpam-6462	homotopy
ejpam-6462	anakira
ejpam-6462	solution
ejpam-6462	error
ejpam-6462	nonlinear