@inproceedings {beech-spp-2004, title = {Periodicity in a Penna model}, booktitle = {Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress}, year = {2004}, month = {25{\textendash}27 Oct 2004}, pages = {11}, address = {Bohol Tropics Resort, Tagbilaran City}, abstract = {
A population of an asexually reproducing species is simulated using a suggested 8-bit string length implementation and a modified implementation of the Verhulst factor. The age structure of the population generated by this implementation is found to be non-Gompertzian and time-dependent. The change in age structure is shown to be a result of the periodic behavior of the population of its component ages, with relatively similar period, but different phase.
}, author = {Maria Donna N Beech and Ronald S. Banzon} }