@article{1987garywcrawfordainuancestorsandprehistoricasianagriculture,
  title = {Ainu ancestors and prehistoric Asian agriculture},
  author = {Gary W. Crawford, Masakazu Yoshizaki},
  year = {1987},
  url = {https://doi.org/10.1016/0305-4403(87)90007-0}
}