@article{LJM_2004_16_a0,
     author = {A. Bovykin},
     title = {Order-types of models of arithmetic and a~connection with arithmetic},
     journal = {Lobachevskii journal of mathematics},
     pages = {3--15},
     year = {2004},
     volume = {16},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2004_16_a0/}
}