@article{oai:tsukuba.repo.nii.ac.jp:00015828, author = {平良, 和昭 and TAIRA, Kazuaki}, issue = {2}, journal = {Tsukuba Journal of Mathematics}, month = {Dec}, pages = {513--562}, title = {The theory of semigroups with weak singularity and its applications to partial differential equations}, volume = {13}, year = {1989}, yomi = {タイラ, カズアキ} }