[1]
E. Kreyszig, H. Kreyszig, and E. J. Norminton, Advanced engineering mathematics, 10th ed., International student version. Hoboken, N.J.: Wiley, 2011.
[2]
G. James and P. Dyke, Advanced modern engineering mathematics, Fifth edition. Harlow, England: Pearson, 2018 [Online]. Available: https://ebookcentral.proquest.com/lib/leicester/detail.action?docID=5138099