Tobita, Kiyohiro.

• Jōkai Fūzoku eigyō tō no kisei oyobi gyōmu no tekiseika tō ni kansuru hōritsu
• Jokai Fuzoku eigyo to no kisei oyobi gyomu no tekiseika to ni kansuru horitsu
• Jōkai Fūzoku eigyō tō torishimarihō