APA:
Potočnik, Primož, Spiga, Pablo, Verret, Gabriel (2015). A census of 4-valent half-arc-transitive graphs and arc-transitive digraphs of valence two.
Ars mathematica contemporanea, volume 8, issue 1, str. 133-148.
URN:NBN:SI:DOC-V8Q4VWTF from http://www.dlib.si
MLA:
Potočnik, Primož, Spiga, Pablo, Verret, Gabriel. "A census of 4-valent half-arc-transitive graphs and arc-transitive digraphs of valence two."
Ars mathematica contemporanea volume 8. issue 1 (2015) str. 133-148.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-V8Q4VWTF>