Volume & Issue: Volume 11, Issue 2, Summer 2020, Pages 65-150 (This issue will be completed in the end of July, but all published articles are fully citable.) 
1. On the M-polynomial of planar chemical graphs

Pages 65-71

Emeric Deutsch; Sandi Klav┼żar


2. Rhombellane-related crystal networks

Pages 73-81

Mihai Medeleanu; Zahra Khalaj; Mircea Vasile Diudea


3. Pseudospectrum Energy of Graphs

Pages 83-93

Hahder Shelash; Ali Shukur


4. On edge Mostar index of graphs

Pages 95-106

Hechao Liu; Ling Song; Qiqi Xiao; Zikai Tang