@article{DAN_1957_115_3_a33,
     author = {E. I. Pokrovskii and M. V. Vol'kenshtein},
     title = {A study of isotactic polypropylene by means of infrared spectra},
     journal = {Doklady Akademii Nauk},
     pages = {552--553},
     publisher = {mathdoc},
     volume = {115},
     number = {3},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_115_3_a33/}
}