(in progress)
Two types of statements of time-spans can be found:
* approximate estimates of time-spans
* attempts at calculating time-spans
The time-spans were calculated using various king-lists (but not for example the Old Assyrian Eponym List, if even available in the late periods).
lists of examples here
lists of examples here
Hachmann, R. (1977). Assyrische Abstandsdaten und absolute Chronologie. Zeitschrift Des Deutschen Palästina-Vereins (1953-), 93, 97-130. JSTOR link
Nadav Na'Aman. (1984). Statements of Time-Spans by Babylonian and Assyrian Kings and Mesopotamian Chronology. Iraq, 46(2), 115-123. JSTOR link