%0 Journal Article %A Bonetti, Elena %A Rocca, Elisabetta %T Unified gradient flow structure of phase field systems via a generalized principle of virtual powers %J ESAIM: Control, Optimisation and Calculus of Variations %D 2017 %P 1201-1216 %V 23 %N 3 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/cocv/2016051/ %R 10.1051/cocv/2016051 %G en %F COCV_2017__23_3_1201_0