C. CALVI PARISETTI, S. PASQUALI
Stability of a stochastic predator-prey system 
Rivista
di Matematica dell'Università di Parma
(6) 3 (2000), 245-258.
In this paper we study the stability of equilibrium solutions
of a stochastic differential equation derived by a Lotka-Volterra
predator-prey model by introducing a noise on a parameter.
