@article{NANO_2011_2_4_a5,
     author = {Y. Sait\={o} and T. Umeda},
     title = {Threshold eigenfunctions and threshold resonances of some relativistic operators},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {71--77},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2011_2_4_a5/}
}