@article {ito1998, title = {Electrical and Optical Properties of Stannite-Type Quaternary Semiconductor Thin Films}, journal = {Japanese Journal of Applied Physics}, volume = {27}, year = {1988}, month = {Aug-11-1989}, pages = {2094 - 2097}, issn = {0021-4922}, doi = {10.1143/JJAP.27.2094}, url = {http://stacks.iop.org/1347-4065/27/2094} }