TY  - DATA
TI  - 6 papers on partial differential equations
T2  - American Mathematical Society Translations: Series 2, 
SN  - 9781470432317 (online)
KW  - Differential equations, Partial
N1  - "Published by the American Mathematical Society ... under a grant from the National Science Foundation"--Title page; On the asymptotic behavior of the spectral function and expansion in eigenfunctions of the equation; B. M. Levitan; M. A. Naimark; O. A. Ladyzenskaya; A. I. Koselev; E. M. Landis; M. I. Visik and L. A. Lyusternik
UR  - http://www.ams.org/trans2/020
ER  -