Periodic Motions (Miklós Farkas). - H. I. Freedman (SIAM Rev., 1995)

A mathematical model of vascular tumor treatment by chemotherapy. - Wenxiang Liu; H. I. Freedman (Math. Comput. Model., 2005)

Persistence and extinction in a mathematical model of cell populations affected by radiation. - H. I. Freedman; Suani T. R. Pinho (Period. Math. Hung., 2008)

An environmental model for the interactions of industry with two competing agricultural resources. - Ibrahim Agyemang; H. I. Freedman (Math. Comput. Model., 2009)