1. H. Jafari, R. Soltani, C.M. Khalique, D. Baleanu, Bound. Value Probl. 2013, 117 (2013)
2. M. Matinfar, M. Eslami, S. Roshandel, Pramana J. Phys. 85, 593 (2015)
3. Z. Zhang, J. Zhong, S.S. Dou, J. Liu, D. Peng, T. Gao, Rom. Rep. Phys. 65, 1155 (2013)
4. N. Taghizadeh, M. Mirzazadeh, A.S. Paghaleh, Appl. Appl. Math. 7, 117 (2012)
5. M.F. El-Sabbagh, S.I. El-Ganaini, Appl. Math. Sci. 6, 3893 (2012)