@article {IOPORT.00930605,
    author       = {Wang, Lieheng},
    title        = {Morley's element approximation to a fourth order variational inequality with curvature obstacle.},
    year         = {1990},
    journal      = {Mathematica Numerica Sinica},
    volume       = {12},
    number       = {3},
    issn         = {0254-7791},
    pages        = {279-284},
    publisher    = {Chinese Academy of Sciences, Institute of Computational Mathematics and Scientific/Engineering Computing, Beijing},
    identifier   = {00930605},
}