TY - JOUR AU - Dimiter Petkov Tsvetkov AU - Svetlin Georgiev Georgiev TI - A Time-dependent Biochemical System JO - Matematički Vesnik PY - 1997 PB - Društvo matematičara Srbije VL - 49 IS - 208 SP - 115 EP - 122 LA - eng KW - dynamical systems; periodic solutions; stability of solutions UR - http://eudml.org/doc/258048 ER -