@techreport{oai:tsukuba.repo.nii.ac.jp:00022717,
 author = {Shi, Fengbo and 石, 鳳波},
 month = {},
 note = {Includes bibliographical references},
 title = {Optimal hostage rescue problem where action can only be taken once : case where effect vanishes thereafter},
 year = {2001}
}