TY - DATA AU - Kre�in, M. G. AU - IAkubovich, V. A. TI - Four papers on ordinary differential equations T2 - American Mathematical Society Translations: Series 2, SN - 9781470433314 (online) PY - 1983/// CY - Providence, R.I. PB - American Mathematical Society KW - Differential equations N1 - Includes bibliographical references; Foundations of the theory of; M. G. Krein; M. G. Krein; V. A. Jakubovic; M. G. Krein and V. A. Jakubovic UR - http://www.ams.org/trans2/120 ER -