@article{DM_1992_4_2_a10,
     author = {A. S. Asratyan and A. N. Mirumyan},
     title = {Counterexamples to the {Kotzig} problem},
     journal = {Diskretnaya Matematika},
     pages = {96--98},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1992_4_2_a10/}
}