In the paper based on the question of Zhang and Lü [15], we present one theorem which will improve and extend results of Banerjee-Majumder [2] and a recent result of Li-Huang [9].
@article{bwmeta1.element.doi-10_1515_aupcsm-2015-0008, author = {Abhijit Banerjee and Bikash Chakraborty}, title = {Further investigations on a question of Zhang and L\"u}, journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica}, volume = {14}, year = {2015}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_1515_aupcsm-2015-0008} }
Abhijit Banerjee; Bikash Chakraborty. Further investigations on a question of Zhang and Lü. Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica, Tome 14 (2015) . http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_1515_aupcsm-2015-0008/