TY - JOUR<br>AU  - Claes Andersson<br>T1  - Paleolithic Punctuations and Equilibria: Did Retention Rather Than Invention Limit Technological Evolution?<br>JO  - PaleoAnthropology<br>Y1  - 2011<br>VL  - 2011<br>SP  - 243<br>EP  - 259<br>ER -