TY - JOUR AU - V. V. Skobelev TI - ``Strings'' theorem and its applications JO - Prikladnaâ diskretnaâ matematika PY - 2009 SP - 84 EP - 89 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PDM_2009_4_a7/ LA - ru ID - PDM_2009_4_a7 ER -