@article{MM2_1992__76_1_155754,
     author = {Takashi Ichinose and Tetsuo Tsuchida},
     title = {On {Kato's} inequality for the {Weyl} quantized relativistic {Hamiltonian.}},
     journal = {Manuscripta mathematica},
     pages = {269--280},
     publisher = {mathdoc},
     volume = {76},
     number = {1},
     year = {1992},
     zbl = {0767.35098},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__76_1_155754/}
}