TY  - BOOK
AU  - El'sgol'ts, L. E. and Norkin, S. B.
AU  - Norkin, S. B. ; jt. auth.
TI  - Introduction to the theory and application of differential equations with deviating arguments
T2  - Mathematics in Science and Engineering
U1  - 515.35 
PY  - 1973///
CY  - New York
PB  - Academic Press
ER  -