The Communications in Combinatorics and Optimization (CCO) is a peer-reviewed journal having two issues annually. The journal is devoted to advancing and promoting the theory and applications of combinatorics and optimization and interdisciplinary. It is aimed to publish original high quality refereed papers, occasionally survey articles and short notes. There are no fees for submitting, processing or publishing an article in Communications in Combinatorics and Optimization CCO publishes two issues annually, the first issue at the end of June and the second issue at the end of December. 






We are delighted to announce that Communications in Combinatorics and Optimization is indexed by Scopus. Please visit and use the Author Search to see the articles indexed up to 2021,  Vol. 6, Issue 1.


Current Issue: Volume 6, Issue 2, Summer and Autumn 2021, Pages 171-324 

5. Total domination in cubic Knodel graphs

Pages 221-230


Nader Jafari Rad; Doost Ali Mojdeh; Reza Musawi; E. Nazari

7. On the variable sum exdeg index and cut edges of graphs

Pages 249-257


Ansa Kanwal; Adnan Aslam; Zahid Raza; Naveed Iqbal; Bawfeh Kometa

8. Some remarks on the sum of the inverse values of the normalized signless Laplacian eigenvalues of graphs

Pages 259-271


Igor Milovanovic; Emina Milovanovic; Marjan Matejic; Serife Burcu Bozkurt Altındağ

10. Strength of strongest dominating sets in fuzzy graphs

Pages 287-297


Nader Jafari Rad; Marzieh Farhadi Jalalvand; Maryam Ghorani

11. Line completion number of grid graph Pn × Pm

Pages 299-313


Joseph Varghese Kureethara; Merin Sebastian