Author: Nauchno-prakticheskai͡a regionalʹnai͡a konferent͡sii͡a "Strategii͡a razvitii͡a mineralʹno-syrʹevogo kompleksa Privolzhskogo i I͡Uzhnogo federalʹnykh okrugov na 2005 i posledui͡ushchie gody" (2004 Saratov, Russia)