Recent progress in the development of windows with vacuum glass Ulrich Pont, Magdalena Wölzl, Peter Schober, Shiva Najaf Khosravi, Matthias Schuss and Ardeshir Mahdavi MATEC Web Conf., 282 (2019) 02020 Published online: 06 September 2019 DOI: 10.1051/matecconf/201928202020