Variationsrechnung.
Elsgolc, L.E.
B.I.-Wissenschaftsverlag, Mannheim, Wien, Zürich, 1970
ISBN: 3411004312
€ 8,00
19 x 12.5 cm, paperback, 162, 20 pages, Text in German, very good condition, see picture.
Hochschultaschenbücher, vol. 431. German translation of the English edition Calculus of Variations (Pergamon, 1961).