http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Typical singularities of differential 1-forms and Pfaffian equations
Tipichnye osobennosti different͡sialʹnykh 1-form i Pfaffovykh upravleniĭ. English
Includes bibliographical references (pages 167-170) and indexes.
Translations of mathematical monographs. v. 113