Two types of statements of time-spans can be found:

* approximate estimates of time-spans

* attempts at calculating time-spans

Bibliography

Hachmann, R. (1977). Assyrische Abstandsdaten und absolute Chronologie. Zeitschrift Des Deutschen Palästina-Vereins (1953-), 93, 97-130. Retrieved from http://www.jstor.org/stable/27931052