@mastersthesis{selmasters97,
    author = {齋藤 晃},
    title = {コード片の生存期間がコードクローンと欠陥修正の有無に与える影響分析},
    school = {The University of Osaka},
    address = {Osaka, Japan},
    year = 2011,
    month = feb,
    type = {Master Thesis},
}