@article{UZKU_2014_156_4_a11,
     author = {E. V. Biryaltsev and A. M. Gusenkov and O. N. Zhibrik},
     title = {Some approaches to the markup of scientific documents containing mathematical expressions},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {133--148},
     publisher = {mathdoc},
     volume = {156},
     number = {4},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2014_156_4_a11/}
}