@article{oai:repository.dl.itc.u-tokyo.ac.jp:00018103,
 author = {Konagai, Kazuo},
 issue = {9},
 journal = {生産研究},
 month = {Sep},
 pages = {295--298},
 title = {研究速報 : AN UPRIGHT SINGLE BEAM EQUIVALENT TO GROUPED PILES},
 volume = {50},
 year = {1998}
}