C. Brennecke, A. Linke, C. Merdon & J. Schöberl. (2020). Optimal and Pressure-Independent $L^2$ Velocity Error Estimates for a Modified Crouzeix-Raviart Stokes Element with BDM Reconstructions.
Journal of Computational Mathematics. 33 (2).
191-208.
doi:10.4208/jcm.1411-m4499