For citations:
Saitō Y., Umeda T. Threshold eigenfunctions and threshold resonances of some relativistic operators. Nanosystems: Physics, Chemistry, Mathematics. 2011;2(4):71-77.
Saitō Y., Umeda T. Threshold eigenfunctions and threshold resonances of some relativistic operators. Nanosystems: Physics, Chemistry, Mathematics. 2011;2(4):71-77.