@inproceedings{CTT100691631,
  author = {masayuki kuwata and Asuka Terai and Masanori Nakagawa},
  title = {Title: Analysis of the social structures for the construction of a social development model using country-base data from 1970 to 2000},
  booktitle = {},
  year = 2007,
}

@inproceedings{CTT100691639,
  author = {masayuki kuwata and Asuka Terai and Masanori Nakagawa},
  title = {Re-examination of a Social Development Model Constructed via Principal Component Analysis},
  booktitle = {roc of the 70th Annual Meeting of the Psychometric Society and the 14th International Meeting of the Psychometric Society (IMPS2005)},
  year = 2005,
}