TY  - BOOK
AU  - Elsgolts,Lev Ernestovich
AU  - Norkin,Sim Borisovich
TI  - Introduction to the theory and application of differential equations with deviating arguments
U1  - 515.3 
PY  - 1973///
CY  - New York
PB  - Academic Press
KW  - ECUACIONES DIFERENCIALES
ER  -