Volume & Issue: Volume 10, Issue 1, March 2021, Pages 1-71
##### On a Conjecture about Degree Deviation Measure of Graphs

Pages 1-8

Ali Ghalavand; Ali Reza Ashrafi

##### Some inequalities involving the distance signless Laplacian eigenvalues of graphs

Pages 9-29

Abdollah Alhevaz; ‎Maryam Baghipur; Shariefuddin Pirzada; Yilun Shang

Pages 31-42

Omer Egecloglu

##### Symmetric $1$-designs from $PSL_{2}(q),$ for $q$ a power of an odd prime

Pages 43-61

Xavier Mbaale; Bernardo G. Rodrigues

##### Some remarks on the sum of powers of the degrees of graphs

Pages 63-71

Emina I. Milovanovic; Marjan Matejic; Igor Z. Milovanovic