The effect of vaccinations in an immigrant model. - Carmen Piccolo III; Lora Billings (Math. Comput. Model., 2005)

Matrix Scaling and Tipping Points. - Michael A. S. Thorne; Eric Forgoston; Lora Billings; Anje-Margriet Neutel (SIAM J. Appl. Dyn. Syst., 2021)