Waltman, P. An epidemic model with two populations. (English) Zbl 0238.92008 Conf. Theory ordinary partial diff. Equ., Dundee/Scotland 1972, Lect. Notes Math. 280, 354-357 (1972). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 92D25 Population dynamics (general) PDF BibTeX XML OpenURL