Volume & Issue: Volume 5, Issue 1, Winter and Spring 2020, Pages 1-81 
2. A study on some properties of leap graphs

Pages 9-17

10.22049/cco.2019.26430.1108

Ahmed M Naji; B. Davvaz; Sultan S. Mahde; N.D. Soner


4. Total double Roman domination in graphs

Pages 27-39

10.22049/cco.2019.26484.1118

Guoliang Hao; Lutz Volkmann; Doost Ali Mojdeh


8. The 2-dimension of a Tree

Pages 69-81

10.22049/cco.2019.26495.1119

Jason Hedetniemi; Stephen Hedetniemi; Renu C. Renu C. Laskar; Henry Martyn Mulder