@article{AIHPA_1991__54_2_223_0,
     author = {Pulmannov\'a, S. and Dvure\v{c}enskij, A.},
     title = {On the homomorphisms of sum logics},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {223--228},
     publisher = {Gauthier-Villars},
     volume = {54},
     number = {2},
     year = {1991},
     mrnumber = {1110654},
     zbl = {0739.03037},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1991__54_2_223_0/}
}