1.
, . Algebraic methods in nonlinear perturbation theory. New York, Berlin: Springer Verl.; 1991.
et . Algebraic methods in nonlinear perturbation theory. New York, Berlin : Springer Verl, 3 mai 1991. ISBN 0387974911
Bogaevski V. N. & Povzner A. (1991). Algebraic methods in nonlinear perturbation theory. Springer Verl.
MLA (8th ed.) CitationBogaevski V. N. and Povzner A. Algebraic Methods in Nonlinear Perturbation Theory. Springer Verl, 1991.
Warning: These citations may not always be 100% accurate.