Prasad, Amit Kumar Breakdown of Kasha's Rule in a Ubiquitous, Naturally Occurring, Wide Bandgap Aluminosilicate (Feldspar). [electronic resource] - Scientific reports 01 2018 - 810 p. digital Publication Type: Journal Article ISSN: 2045-2322 Standard No.: 10.1038/s41598-017-17466-z doi