@article{oai:minpaku.repo.nii.ac.jp:00003114,
 author = {Pitiphat, Sumitr},
 journal = {Senri Ethnological Studies},
 month = {Mar},
 pages = {103--116},
 title = {Interaction of an Unknown Hill People in Northwestern Thailand With the Ancient Trade Along Silk Road},
 volume = {32},
 year = {1992}
}