@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008607,
 author = {Shioya, Masahiro and 塩谷, 真弘},
 month = {},
 note = {It is well-known that the existence of an edementary embedding of the universe into a transitive model with к critical is equivalent to that of a normal ultrafilter ..., 1992},
 school = {筑波大学, University of Tsukuba},
 title = {On normal filters on P[kappa][lambda]},
 year = {1993}
}