Gruden, K., T. Popovič, N. Cimerman, et al. "Diverse Enzymatic Specificities of Digestive Proteases, 'Intestains', Enable Colorado Potato Beetle Larvae to Counteract the Potato Defence Mechanism" Biological Chemistry, 384.2 (2005): 305-310. Retrieved 18 May. 2013, from doi:10.1515/BC.2003.034

Gruden, K., Popovič, T., Cimerman, N., et al. (2005). Diverse Enzymatic Specificities of Digestive Proteases, 'Intestains', Enable Colorado Potato Beetle Larvae to Counteract the Potato Defence Mechanism. Biological Chemistry, 384(2), pp. 191-327. Retrieved 18 May. 2013, from doi:10.1515/BC.2003.034

Gruden, K., T. Popovič, N. Cimerman, et al. 2005. Diverse Enzymatic Specificities of Digestive Proteases, 'Intestains', Enable Colorado Potato Beetle Larvae to Counteract the Potato Defence Mechanism. Biological Chemistry. 384(2): 191-327. Retrieved 18 May. 2013, from doi:10.1515/BC.2003.034