TY  - BOOK
AU  - El'sgol' ts,L.E.
AU  - Norkin,S.B.
AU  - Casti,John L.
TI  - Introduction to the theory and application of differential equations with deviating arguments, / 
U1  - 515.35 ELS 
KW  - Differential equations
N1  -  Includes bibliography: p. 293-357
ER  -