Trunin, Roman Anatolievich; Uchitel, Mikhail Lvovich; Maevskij, Evgenij Iljich; Heifets, Vladimir Izrailevich; Chernitzkaya, Svetlana Yakovlevna; Kasseinova, Donna; Ermakova, Galina Nikolaevna Patent: US2012/130125 A1, 2012 ; Location in patent: Page/Page column 3 ;