@article{10_4064_fm_123_1_11_20,
     author = {Jacek Michalski},
     title = {Free products of n-groups},
     journal = {Fundamenta Mathematicae},
     pages = {11--20},
     year = {1984},
     volume = {123},
     number = {1},
     doi = {10.4064/fm-123-1-11-20},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-123-1-11-20/}
}