Afrouzi, G., A. Hadjian, S. Shakeri, and M. Mirzapour. “EXISTENCE RESULTS FOR A QUASILINEAR BOUNDARY VALUE PROBLEM INVESTIGATED VIA DEGREE THEORY”. Journal of Nonlinear Analysis and Optimization: Theory & Applications, vol. 3, no. 1, Mar. 2012, pp. 25-32, http://www.math.sci.nu.ac.th/ojs302/index.php/jnao/article/view/92.