1. Characteristics of animals adopted from an animal control center whose owners complied with a spaying/neutering program;Alexander;Journal of the American Veterinary Medical Association,1994
2. Use of matrix population models to estimate the efficacy of euthanasia versus trapneuterreturn for management of free-roaming cats;Andersen;Journal of the American Veterinary Medical Association,2004
3. Surgical techniques for neutering 6- to 14-week-old kittens;Aronsohn;Journal of the American Veterinary Medical Association,1993
4. Feral cats: their role in the population dynamics of Felis catus;Bradshaw;Applied Animal Behaviour Science,1999
5. Cat Group 2006 Policy Statement 1: Timing of Neutering www.thecatgroup.org.uk/