"‹ã�Î�³”ü,’|‰ºŒ’“ñ,ŒF’JŠ²˜Y,“c‘º�F�Í,�‚“‡—mˆê","“V‘Rƒ[ƒIƒ‰ƒCƒg‚ð—p‚¢‚½‰·“xƒXƒCƒ“ƒO‹z’…–@‚É‚æ‚éNOx‚̘A‘±�ÉŽ_‰»‰ñŽû",,"“ú–{Œ´Žq—ÍŠw‰ïŽ�",,"Vol. 34","No. 10","pp. 967-970",1992,Oct.
"‹ã�Î �³”ü,’|‰ºŒ’“ñ,ŒF’J Š²˜Y,“c‘º �F�Í,�‚“‡—mˆê","“V‘Rƒ[ƒIƒ‰ƒCƒg‚ð—p‚¢‚½NOx‚Ì�ÉŽ_‰»‰ñŽû",,"“ú–{Œ´Žq—ÍŠw‰ïŽ�",,"Vol. 34","No. 6","pp. 529-532",1992,Jan.