A piecewise P2-nonconforming quadrilateral finite elementImbunm Kim, Zhongxuan Luo, Zhaoliang Meng, Hyun Nam, Chunjae Park and Dongwoo SheenESAIM: M2AN, 47 3 (2013) 689-715DOI: https://doi.org/10.1051/m2an/2012044
