The following publications are possibly variants of this publication:
- Superconvergence of triangular Raviart-Thomas mixed finite element methods for a bilinear constrained optimal control problemYanping Chen, Zuliang Lu, Yunqing Huang. cma, 66(8):1498-1513, 2013. [doi]
- Superconvergence of mixed finite element methods for optimal control problemsYanping Chen. moc, 77(263):1269-1291, 2008. [doi]
- Error Estimates and Superconvergence of Mixed Finite Element Methods for Convex Optimal Control ProblemsYanping Chen, Yunqing Huang, Wenbin Liu, Ningning Yan. jscic, 42(3):382-403, 2010. [doi]