Ilankovic, A., Damjanovic, A., Ilankovic, V., Milovanovic, S., Petrovic, D., & Ilankovic, N. (2013). Sleep Organisation in Depression and Schizophrenia: Index of Endogenous Periodicity of Sleep as a State Marker [Retracted]. Open Access Macedonian Journal of Medical Sciences, 1(1), 70–75. https://doi.org/10.3889/oamjms.2013.014