TY - JOUR AU - E. S. Zeron TI - Positive and Negative Feedback in Engineering and Biology JO - Mathematical modelling of natural phenomena PY - 2008 SP - 67 EP - 84 VL - 3 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp:2008055/ DO - 10.1051/mmnp:2008055 LA - en ID - MMNP_2008_3_2_a2 ER -