NADJAFI-ARANI,M J., FATH-TABAR,G H. and MIRZARGAR,M . (2010). Sharp Bounds on the PI Spectral Radius. Iranian Journal of Mathematical Chemistry, 1(Issue 1 (Special Issue on the Role of PI Index in Nanotechnology)), 111-117. doi: 10.22052/ijmc.2010.5141

NADJAFI-ARANI,M J., , FATH-TABAR,G H., and MIRZARGAR,M . "Sharp Bounds on the PI Spectral Radius", Iranian Journal of Mathematical Chemistry, 1, Issue 1 (Special Issue on the Role of PI Index in Nanotechnology), 2010, 111-117. doi: 10.22052/ijmc.2010.5141

NADJAFI-ARANI M J., FATH-TABAR G H., MIRZARGAR M. (2010). 'Sharp Bounds on the PI Spectral Radius', Iranian Journal of Mathematical Chemistry, 1(Issue 1 (Special Issue on the Role of PI Index in Nanotechnology)), pp. 111-117. doi: 10.22052/ijmc.2010.5141

M J. NADJAFI-ARANI, G H. FATH-TABAR and M MIRZARGAR, "Sharp Bounds on the PI Spectral Radius," Iranian Journal of Mathematical Chemistry, 1 Issue 1 (Special Issue on the Role of PI Index in Nanotechnology) (2010): 111-117, doi: 10.22052/ijmc.2010.5141

NADJAFI-ARANI M J., FATH-TABAR G H., MIRZARGAR M. Sharp Bounds on the PI Spectral Radius. Iranian J. Math. Chem.. 2010;1(Issue 1 (Special Issue on the Role of PI Index in Nanotechnology)):111-117. doi: 10.22052/ijmc.2010.5141