1 Tzy-Wei Hwang, "Uniqueness of limit cycles of the predator-prey system with Beddington-DeAngelis functional response" 290 : 113-122, 2004
2 S. Chen, "Positive oeriodic solution of two-species ratio-dependentpredator-prey system with time delay in two-patch environment" 150 : 737-748, 2004
3 M. Fan, "Periodicity in a delayed ratio-dependent predator-prey system" 262 : 179-190, 2001
4 M. Fan, "Periodic solutions of a discrete time nonautonomous ratiodependentpredator-prey system" 35 : 951-961, 2002
5 R. S. Cantrell, "On the dynamics of predator-prey models with theBeddington-DeAngelis functional response" 257 : 206-222, 2001
6 "Mutual interference between parasites or predators and its effect onsearching efficiency" 331-340, 1975
7 Y. N. Xiao, "Modeling and analysis of predator-prey model with disease inthe prey" 171 : 59-82, 2001
8 Goh, "Management and Analysis of Biological Populations" 1980
9 Tzy-Wei Hwang, "Global analysis of the predator-prey system with Beddington-DeAngelisfunctional response" 281 : 395-401, 2003
10 C. Cosner, "Effects of spatial grouping onthe functional response of predators" 56 : 65-75, 1999
1 Tzy-Wei Hwang, "Uniqueness of limit cycles of the predator-prey system with Beddington-DeAngelis functional response" 290 : 113-122, 2004
2 S. Chen, "Positive oeriodic solution of two-species ratio-dependentpredator-prey system with time delay in two-patch environment" 150 : 737-748, 2004
3 M. Fan, "Periodicity in a delayed ratio-dependent predator-prey system" 262 : 179-190, 2001
4 M. Fan, "Periodic solutions of a discrete time nonautonomous ratiodependentpredator-prey system" 35 : 951-961, 2002
5 R. S. Cantrell, "On the dynamics of predator-prey models with theBeddington-DeAngelis functional response" 257 : 206-222, 2001
6 "Mutual interference between parasites or predators and its effect onsearching efficiency" 331-340, 1975
7 Y. N. Xiao, "Modeling and analysis of predator-prey model with disease inthe prey" 171 : 59-82, 2001
8 Goh, "Management and Analysis of Biological Populations" 1980
9 Tzy-Wei Hwang, "Global analysis of the predator-prey system with Beddington-DeAngelisfunctional response" 281 : 395-401, 2003
10 C. Cosner, "Effects of spatial grouping onthe functional response of predators" 56 : 65-75, 1999
11 R. S. Cantrell, "Effects of domain size on the persistence of populationsin a dieeusive food chain model with DeAngelis-Beddington functional response" 14 : 335-367, 2001
12 M. Fan, "Dynamics of a nonautonomous predator-prey system with theBeddington-DeAngelis functional response" 295 : 15-39, 2004
13 R. P. Agarwal, "Difference Equations and Inequalities: Theory, Methods and Applications" Marcel Dekker,New York (228) : 2000
14 I, "Deterministic Mathematical Models in Population Ecology" 1980
15 F. Jose, "An approximation for prey-predator models with time delay" 110 : 313-322, 1997
16 DeAngelis, "A model for trophic interaction" 881-56 892, 1975