Eighty years of Professor Otakar Borůvka http://hdl.handle.net/10338.dmlcz/500356 35 Eighty years of Professor Otakar Borůvka http://hdl.handle.net/10338.dmlcz/500355 Eighty years of Professor Otakar Borůvka Tue, 14 Jun 2011 14:27:42 GMT