Alessandro Semeria Marco Villani Roberto Serra Stuart A. Kauffman Perturbation in Genetic Regulatory Networks: Simulation and Experiments. 533-542 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3305&spage=533 2004 conf/acri/2004 ACRI db/conf/acri/acri2004.html#SemeriaVSK04