TY  - BOOK
AU  - MacDonald N
TI  - Time lags in biological models
T2  - Lecture notes in biomathematics; 27
U1  - G:(B33), L8 
PY  - 1978///
CY  - Berlin
PB  - Springer Verlag        
KW  -  Nonlinear differential equation
KW  - Biology
N1  - Bibliography 103-105p
ER  -