JOURNAL Series A - Pure and Applied Mathematics
JOURNAL Series A - Pure and Applied Mathematics
JOURNAL Series A - Pure and Applied Mathematics
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77<strong>JOURNAL</strong>OF THE TECHNICAL UNIVERSITY AT PLOVDIVFUNDAMENTAL SCIENCES AND APPLICATIONS‣ISSN 1310-8271Editor-in-ChiefPeyo StoilovСПИСАНИЕНА ТЕХНИЧЕСКИЯ УНИВЕРСИТЕТ В ПЛОВДИВФУНДАМЕНТАЛНИ НАУКИ И ПРИЛОЖЕНИЯ‣√ÀABEH PEƒA TOPœeÈo CÚoËÎo‚»«ƒATEÀC O-œOÀ»√PA‘»◊HO «BEHOTexÌ˘ecÍË ”ÌË‚epcËÚeÚ - CoÙˡ, ‘ËÎËaÎ- œÎo‚‰Ë‚4000 œÎo‚‰Ë‚, yÎ. ÷aÌÍo ƒ˛cÚa·aÌo‚ π 25