Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsuoka Masahiro,Phase Operator in Quantum Mechanics. Phase and the Numer-Phase Uncertainty of the Electromagnetic Field.,Butsuri,00290181,The Physical Society of Japan,1994,49,8,643-649,https://cir.nii.ac.jp/crid/1390282680380970624,https://doi.org/10.11316/butsuri1946.49.643