TY - BOOK AU - El'sgolts,L.E & Norkin,S.B ED - Norkin, S.B TI - Introduction to the theory & application of differential equations with deviating arguments T2 - Mathematics in science & engineering 105 SN - 0122377508 U1 - 10.01 PY - 1973/// CY - New York PB - Academic Press ER -