Description of document versions ==================================== .. csv-table:: "**Version** **Aster**", "**Author (s)** **Organization (s)**", "**Description of changes**" "11.2", "I. ZENTNER EDF /R &D/ AMA ", "Initial document version." "13.1", "I. ZENTNER EDF /R &D/ AMA ", "Introduction of spatial variability: simulation of a vector process based on the data of the DSP and the coherence function"