@article{CM_1990__73_2_199_0,
     author = {Guruprasad, K. and Kumar, Shrawan},
     title = {A new geometric invariant associated to the space of flat connections},
     journal = {Compositio Mathematica},
     pages = {199--222},
     publisher = {Kluwer Academic Publishers},
     volume = {73},
     number = {2},
     year = {1990},
     mrnumber = {1046738},
     zbl = {0698.53016},
     language = {en},
     url = {http://www.numdam.org/item/CM_1990__73_2_199_0/}
}