@article{AL_1984_23_5_a1, author = {N. Ya. Medvedev}, title = {Free products of $l$-groups}, journal = {Algebra i logika}, pages = {493--511}, publisher = {mathdoc}, volume = {23}, number = {5}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1984_23_5_a1/} }