@article{ADM_2020_29_1_a9,
     author = {A. A. Pypka},
     title = {On some non-periodic groups whose cyclic subgroups are $GNA$-subgroups},
     journal = {Algebra and discrete mathematics},
     pages = {109--116},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2020_29_1_a9/}
}