@phdthesis{oai:tsukuba.repo.nii.ac.jp:00032578,
 author = {矢内, 直人 and Yanai, Naoto},
 month = {},
 note = {2013},
 school = {筑波大学, University of Tsukuba},
 title = {A Study on Provable Security of Signature Schemes for Multiple Signers},
 year = {2014}
}