TY - JOUR T1 - Platycheirus species (Diptera, Syrphidae) for the Altai Mountains, SE Siberia, with description of five new species JF - Norwegian Journal of Entomology Y1 - 2008 A1 - Barkalov, Anatolii V. A1 - Nielsen, Tore R. SP - 91 EP - 104 VL - 55 ER -