@article{BSL_2015_44_1-2_a6,
     author = {Shalack, Vladimir},
     title = {On {Some} {Applied} {First-Order} {Theories} which {Can} {Be} {Represented} by {Definitions}},
     journal = {Bulletin of the Section of Logic},
     publisher = {mathdoc},
     volume = {44},
     number = {1-2},
     year = {2015},
     url = {http://geodesic.mathdoc.fr/item/BSL_2015_44_1-2_a6/}
}