MICROSTRUCTURE AND SPECTROSCOPIC STUDY OF PERIODIC MICRO- AND NANO-STRUCTURES THAT OCCUR ON THE SURFACE OF AMORPHOUS AND CRYSTALLINE SILICA UNDER RESONANCE RADIATION CO <SUB>2</SUB>-LASER ArticleMukhamedgalieva A.F., Bondar A.M., Kreinin S.M., Laptev V.B., Novikova N.N., Trofimov N.S., Shvedov I.M.Горный информационно-аналитический бюллетень (научно-технический журнал). 2015. С. 173-179