Introduction to non-linear mechanics
by N. Kryloff and N. Bogoliuboff ; a free translation by Solomon Lefschetz of excerpts from two Russian monographs.
Princeton : Princeton University Press, 1947.
106 págs. ; 23 cm.
Serie: Annals of mathematics studies ; no. 11
"2nd printing, 1947, with errata on p. 106".
Reseña: MathSciNet, MR0007461