David added 2 papers 2012-04-25 15:43:02 -0700

David started following the work of Anna Feigenbaum, Richmond, the American International University in London, Humanities, Social Sciences & Communications. 2012-04-11 08:13:14 -0700

David started following the work of Ondrej Skovajsa, J. E. Purkinje University in Ústí nad Labem, English. 2012-03-11 01:21:19 -0800