@phdthesis{oai:tsukuba.repo.nii.ac.jp:00020849,
 author = {磯貝, 英一 and Isogai, Eichi},
 month = {},
 note = {1989},
 school = {筑波大学, University of Tsukuba},
 title = {Nonparametric probability density estimation using recursive kernel estimators},
 year = {1989}
}