A new approach to the logistic function with some applications
  In the present paper we propose a new approach to investigate the logistic function, commonly used in mathematical models in economics and management. The approach is based on indicating in a given time series, having a logistic trend, some characteristic points corresponding to zeroes of successive derivatives of the logistic function. We give also examples of application of this method. 
Grzegorz Rzadkowski, Iwona G{\l}a\.zewska, Katarzyna Sawi\'nska
math.CA