@article{TRSPY_2002_239_a9,
     author = {N. P. Dolbilin and V. S. Makarov},
     title = {Extension {Theorem} in the {Theory} of {Isohedral} {Tilings} and {Its} {Applications}},
     journal = {Informatics and Automation},
     pages = {146--169},
     publisher = {mathdoc},
     volume = {239},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2002_239_a9/}
}