Benshi Zhu, Positive Solutions for a Class of Semipositone Discrete Boundary Value Problems with Two Parameters. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. October 2010, vol. 46(10). 1370 - 1376 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/16003.