ANDRICA, D. Book Reviews: Vijay Gupta and Michael Th. Rassias, "Computation and Approximation", Springer Cham 2021, Ser.: Springer Briefs in Mathematics DOI: Https: doi.Org 10.1007 978-3-030-85563-5. Stud. Univ. Babeş-Bolyai Math. 2022, 67, 673-673.