A $C^1$-Conforming Gauss Collocation Method for Elliptic Equations and Superconvergence Analysis Over Rectangular Meshes. CSIAM-AM [Internet]. 2024 May 20 [cited 2025 Dec. 6];5(2):320-49. Available from: https://www.global-sci.com/index.php/csiam-am/article/view/7859