TY - JOUR AU - Brenier, Yann TI - A modified least action principle allowing mass concentrations for the early universe reconstruction problem JO - Confluentes Mathematici PY - 2011 SP - 361 EP - 385 VL - 3 IS - 3 PB - World Scientific Publishing Co Pte Ltd UR - http://archive.numdam.org/articles/10.1142/S1793744211000400/ DO - 10.1142/S1793744211000400 LA - en ID - CML_2011__3_3_361_0 ER -