Media type: E-Article Title: A lower bound for $$K^2_S$$ K S 2 Contributor: Di Gennaro, Vincenzo; Franco, Davide Published: Springer Science and Business Media LLC, 2017 Published in: Rendiconti del Circolo Matematico di Palermo (1952 -), 66 (2017) 1, Seite 69-81 Language: English DOI: 10.1007/s12215-016-0273-7 ISSN: 0009-725X; 1973-4409 Keywords: General Mathematics Origination: Footnote: