Nakahara, Y. and Yoshikawa, M. (1959):

Nakahara, Y. - Yoshikawa, M., Pre-Sargonic Documents on Socio-Economic History (II): Palaeologia 8, Nr. 1 (Osaka 1959) 42-53 (in Japanese).

Nakahara, Y. and Yoshikawa, M. (1959):

Nakahara, Y. - Yoshikawa, M., Pre-Sargonic Documents on Socio-Economic History (III): Palaeologia 8, Nr. 3 (Osaka 1959) 292-9 (in Japanese).