Dear colleagues, I need following paper. Hans V. Hansen. A taxonomic revision of the genera Gerbera sect. Isanthus, Leibnitzia (in Asia), and Uechtritzia (Compositae, Mutisieae). Nordic Journal of Botany. Volume 8, Issue 1, pages 61–76, February 1988.Best Regards Dr. Ali KANDEMİRErzincan University, Art and Science Faculty, Dept. of Biology Erzincan-TURKEY