Vass Csaba;  Osvay Károly;  Hopp Béla: Fabrication of 150 nm Period Grating in Fused Silica by Two-beam Interferometric Laser Induced Backside Wet Etching Method.
  OPTICS EXPRESS, 14 (18).  pp. 8354-8359.  ISSN 1094-4087 (2006)