@article{JCA_2000_7_1_JCA_2000_7_1_a5,
     author = {A. Verona and M. E. Verona},
     title = {Regular {Maximal} {Monotone} {Operators} and the {Sum} {Theorem}},
     journal = {Journal of convex analysis},
     pages = {115--128},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2000},
     url = {http://geodesic.mathdoc.fr/item/JCA_2000_7_1_JCA_2000_7_1_a5/}
}