%0 journal article %@ 0207-401X %A Shantarovich, V.P.,Yampolskii, Y.,Sivergin, Y.M.,Salamatina, O.B.,Gustow, V.W.,Hofmann, D. %D 2003 %J Khimicheskaya Fizika (RUS) %N 2 %P 87-101 %T On possibility of study nano-structure of free volume in polymers by positron annihilation method %U 2 %X