Popov Prize previous winners, University of South Carolina, Interdisciplinary Mathematics Institute, Архивирано из оригинала 31. 10. 2015. г., Приступљено 2. 4. 2016
Popov Prize previous winners, University of South Carolina, Interdisciplinary Mathematics Institute, Архивирано из оригинала 31. 10. 2015. г., Приступљено 2. 4. 2016