TY - GEN AU - MacDonald,N TI - Time lags in biological models / SN - 0387090924 U1 - 515.3/4 PY - 1978/// CY - Berlin, New York PB - Springer-Verlag KW - Biology KW - Mathematical models KW - Delay differential equations KW - Integro-differential equations N1 - Biological model with the use of delay-differential equations and integro-differential equations; Contine bibliogr. si index ER -