THE NONCONFORMING CROUZEIX-RAVIART ELEMENT APPROXIMATION AND TWO-GRID DISCRETIZATIONS FOR THE ELASTIC EIGENVALUE PROBLEM

Hai Bi, Xuqing Zhang, Yidu Yang

Journal of Computational Mathematics . 2023, (6): 1041 -1063 . DOI: 10.4208/jcm.2201-m2020-0128