@article{CM_1974__28_2_203_0,
     author = {Schaefer, Philip W.},
     title = {On existence in the {Cauchy} problem for the biharmonic equation},
     journal = {Compositio Mathematica},
     pages = {203--207},
     publisher = {Noordhoff International Publishing},
     volume = {28},
     number = {2},
     year = {1974},
     mrnumber = {340859},
     zbl = {0281.31004},
     language = {en},
     url = {http://www.numdam.org/item/CM_1974__28_2_203_0/}
}