Jalil Rashidinia and Reza Jalilian, Non-Polynomial Spline Solution of Fourth-Order Obstacle Boundary-Value Problems. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. April 2009, vol. 28(4). 241 - 247 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/1642.