@techreport{oai:kwansei.repo.nii.ac.jp:00019431,
 author = {田畑, 顕 and Tabata, Ken},
 issue = {105},
 month = {May},
 title = {The Expansion of the Commercial Sector and the Child Quantity-Quality Transition in a Malthusian World},
 year = {2013}
}