@article{PORMA_1999__56_4_48713,
     author = {Almeida, J. and Delgado, M.},
     title = {On some systems of equations with constraints in a free group. {(Sur} certains syst\`emes d'\'equations avec contraintes dans un groupe libre.)},
     journal = {Portugaliae mathematica},
     pages = {409--417},
     publisher = {mathdoc},
     volume = {56},
     number = {4},
     year = {1999},
     zbl = {0960.20014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1999__56_4_48713/}
}