@article{CTT100549727,
  author = {CHUNYAKOM SIVALEEPUNTH and JUNICHIRO NIWA and Khac Diep BUI and Satoshi Tamura and Yuzuru Hamada},
  title = {Simplifired Truss Model for Externally Prestressed Concrete Beams},
  journal = {土木学会論文集Ｅ},
  year = 2007,
}