EP1890338-A1  VAZSONYI E ET AL: &quot;Improved anisotropic etching process for industrial texturing of silicon solar cells - An Introduction to Design, Data Analysis and Model Building&quot; SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, Bd. 57, Nr. 2, 26. Februar 1999 (1999-02-26), Seiten 179-188, XP004157015 ISSN: 0927-0248WO2008022671-A1  VAZSONYI E ET AL: &quot;Improved anisotropic etching process for industrial texturing of silicon solar cells - An Introduction to Design, Data Analysis and Model Building&quot; SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, Bd. 57, Nr. 2, 26. Februar 1999 (1999-02-26), Seiten 179-188, XP004157015 ISSN: 0927-0248US8182706-B2  CRC Handbook of Chemistry and Physics, 91st Ed &quot;Concentrative properties of aqueous solutions: density, refractive index, freezing point depression, and viscosity&quot; 2011 p. 8-71.;  Divan et al. &quot;Roughning and smoothing dynamics during KOH silicon etching&quot; Apr. 20, 1999 Sensors and Actuators, Elsevier Science Publishers, 74, p. 19-22.;  International Preliminary Report on Patentability for PCT/US2008/003483 issued by the European Patent Office on Mar. 26, 2009 (5 pgs.).;  International Search Report for International Application No. PCT/EP2007/006172, 11 pages.;  Lang &quot;Silicon microstructuring technology&quot; Sep. 1996 Materials Science and Engineering, Elsevier Science Publishers, R17, 1-10.;  Vazonyi E et al. &quot;Improved Anisotropic Etching Process for Industrial Texturing of Silicon Solar Cells_An Introduction to Design, Data Analysis and Model Building&quot; Solar Energy Mateials and Solar Cells Elsevier Science Publishers, Amsterdam, Feb. 26, 1999, 179-188, EP004157015, ISSN: 0927-0248 ( ).;  Vazsonyi et al. &quot;Improved anisotropic etching process for industrial texturing of silicon slar cells&quot; Feb. 26, 1999 Solar Energy Materials and Solar Cells, Elsevier Science Publishers, 57, p. 180-184.CN101507000-B  E. Vazsonyi et al.improved anisotropic etching process for industrial texturing ofsilicon solar cells-an introduction to design, data analysis andmodel building.solar energy materials and solar cells, elsevier science publishers.1999, 179, 181.