Agyemang, Ibrahim; Freedman, H. I. A mathematical model of an agricultural-industrial-ecospheric system with industrial competition. (English) Zbl 1187.91137 Commun. Pure Appl. Anal. 8, No. 5, 1689-1707 (2009). MSC: 91B66 91B76 92D40 37N25 37N40 PDFBibTeX XMLCite \textit{I. Agyemang} and \textit{H. I. Freedman}, Commun. Pure Appl. Anal. 8, No. 5, 1689--1707 (2009; Zbl 1187.91137) Full Text: DOI
Agyemang, Ibrahim; Freedman, H. I. An environmental model for the interactions of industry with two competing agricultural resources. (English) Zbl 1165.91447 Math. Comput. Modelling 49, No. 7-8, 1618-1643 (2009). MSC: 91B76 34D20 92D40 PDFBibTeX XMLCite \textit{I. Agyemang} and \textit{H. I. Freedman}, Math. Comput. Modelling 49, No. 7--8, 1618--1643 (2009; Zbl 1165.91447) Full Text: DOI
Agyemang, Ibrahim; Freedman, Herb I.; Macki, Jack W. An ecospheric recovery model for agriculture-industry interactions. (English) Zbl 1166.34026 Differ. Equ. Dyn. Syst. 15, No. 3-4, 185-208 (2007). Reviewer: E. Ahmed (Mansoura) MSC: 34C60 92D40 34D20 PDFBibTeX XMLCite \textit{I. Agyemang} et al., Differ. Equ. Dyn. Syst. 15, No. 3--4, 185--208 (2007; Zbl 1166.34026)