@article{FORUM_1993__5_3_141718,
     author = {Takashi Ichinose and Tetsuo Tsuchida},
     title = {On essential selfadjointness of the {Weyl} quantized relativistic {Hamiltonian.}},
     journal = {Forum mathematicum},
     pages = {539--560},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1993},
     zbl = {0798.47016},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1993__5_3_141718/}
}