On critical and cocritical radius egde-invariant graphs
Vacek Ondrej TUZDFMDG - Katedra matematiky a deskriptívnej geometrie
Discussiones mathematicae graph theory. Vol. 28. no. 3 (2008), p. 393-418
xcla - ČLÁNKY
https://www.dmgt.uz.zgora.pl/publish/pdf.php?doi=1415