Citation: Ab. Swengel et Sr. Swengel, Effects of prairie and barrens management on butterfly faunal composition, BIODIVERS C, 10(10), 2001, pp. 1757-1785
Citation: Sr. Swengel et Ab. Swengel, Relative effects of litter and management on grassland bird abundance in Missouri, USA, BIRD CONS I, 11(2), 2001, pp. 113-128
Citation: Ab. Swengel et Sr. Swengel, Variation in timing and abundance of elfins (Callophrys) (Lepidoptera : lycaenidae) in Wisconsin during 1987-1999, GT LAKE ENT, 33(1), 2000, pp. 45-68
Citation: Ab. Swengel et Sr. Swengel, Observations of prairie skippers (Oarisma poweshiek, Hesperia dacotae, H-ottoe, H-leonardus pawnee, and Atrytone arogos Iowa) (Lepidoptera : Hesperiidae) in Iowa, Minnesota, and North Dakota during 1988-1997, GT LAKE ENT, 32(4), 1999, pp. 267-292
Citation: Ab. Swengel et Sr. Swengel, Timing of Karner blue (Lepidoptera : Lycaenidae) larvae in spring and adults in spring and summer in Wisconsin during 1991-1998, GT LAKE ENT, 32(1-2), 1999, pp. 79-95