BLAGA, P. A. (2015) “Gerard Walschap, Multivariable Calculs and Differential Geometry, Walter de Gruyter (De Gruyter Graduate), 2015, ix+355 pages, Paperback, ISBN 978-3-11- 036949-6”., Studia Universitatis Babeș-Bolyai Mathematica, 60(4), pp. 625–626. Available at: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5842 (Accessed: 5 February 2025).