@article{oai:aichiu.repo.nii.ac.jp:00003997, author = {磯野, 徹 and ISONO, Toru}, issue = {23}, journal = {文明21, Civilization 21}, month = {Sep}, pages = {57--67}, title = {Similarities and differences in the acquisition between L1 and L2 sounds: with focus on the roles of habitual, innate and natural factors}, year = {2009} }