@article{FPM_2013_18_1_a2,
     author = {V. A. Bragin and E. I. Bunina},
     title = {An example of two cardinals that are equivalent in the $n$-order logic and not equivalent in the $(n+1)$-order logic},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {35--44},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2013_18_1_a2/}
}