Syversen, Nina; Bechmann, Marianne (maj 2004). "Vegetative buffer zones as pesticide filters for simulated surface runoff". Ecological Engineering. 22 (3): 175-184. doi:10.1016/j.ecoleng.2004.05.002. ISSN0925-8574.
Sturtevant, Brian R (oktober 1998). "A model of wetland vegetation dynamics in simulated beaver impoundments". Ecological Modelling. 112 (2-3): 195-225. doi:10.1016/s0304-3800(98)00079-9. ISSN0304-3800.
Syversen, Nina; Bechmann, Marianne (maj 2004). "Vegetative buffer zones as pesticide filters for simulated surface runoff". Ecological Engineering. 22 (3): 175-184. doi:10.1016/j.ecoleng.2004.05.002. ISSN0925-8574.
Sturtevant, Brian R (oktober 1998). "A model of wetland vegetation dynamics in simulated beaver impoundments". Ecological Modelling. 112 (2-3): 195-225. doi:10.1016/s0304-3800(98)00079-9. ISSN0304-3800.