1. On radially extremal graphs and digraphs, a survey Creator: Gliviak, Ferdinand Format: bez média and svazek Type: model:article and TEXT Subject: extremal graphs, extremal digraphs, radius, radius of graphs, and radius of digraphs Language: English Description: The paper gives an overview of results for radially minimal, critical, maximal ad stable graphs and digraphs. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public