@article{JCA_1994_1_1_a0,
     author = {H. Attouch and J.-B. Baillon and M. Thera},
     title = {Variational {Sum} of {Monotone} {Operators}},
     journal = {Journal of convex analysis},
     pages = {001--03},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1994},
     url = {http://geodesic.mathdoc.fr/item/JCA_1994_1_1_a0/}
}