@article{DM_1990_2_4_a0,
     author = {G. E. Puninskii},
     title = {A~finite system of axioms for the model companion of the theory of all multitrees},
     journal = {Diskretnaya Matematika},
     pages = {3--10},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1990_2_4_a0/}
}