Aufray M, Menuel S, Fort Y, Eschbach J, Rouxel D, Vincent B (2009). „New Synthesis of Nanosized Niobium Oxides and Lithium Niobate Particles and Their Characterization by XPS Analysis”. Journal of Nanoscience and Nanotechnology. 9 (8): 4780—4789. doi:10.1166/jnn.2009.1087.