[1] China Univ Petr East China, Coll Sci, Qingdao 266580, Shandong, Peoples R China
[2] China Univ Petr East China, Key Lab Unconvent Oil & Gas Dev, Minist Educ, Qingdao 266580, Shandong, Peoples R China
[3] King Abdulaziz Univ, Dept Math, Nonlinear Anal & Appl Math NAAM Res Grp, Jeddah 21589, Saudi Arabia
[4] Quaid I Azam Univ, Dept Math, Islamabad 44000, Pakistan