@book{8143,
	author = {Saxena, H C},
	title = {Finite differences and numerical analysis},
	publisher = {S Chand},
	year = {2021},
	address = {New Delhi},
	edition = {15th ed.},
	note = {4967 02/01/2023 IF23/1070 13/02/2023 Main Budget}
}