@Article{zbMATH03427774,
Author = {A. D. {Bryuno}},
Title = {{Analytical form of differential equations}},
FJournal = {{Transactions of the Moscow Mathematical Society}},
Journal = {{Trans. Mosc. Math. Soc.}},
ISSN = {0077-1554; 1547-738X/e},
Volume = {25},
Pages = {131--288},
Year = {1973},
Publisher = {American Mathematical Society (AMS), Providence, RI},
Language = {English},
MSC2010 = {34A99},
Zbl = {0272.34018}
}