On the development of the Anuloid, a disk-shaped VTOL aircraft for urban areas
M. Petrolo, E. Carrera, M. D’Ottavio, C.C. de Visser, Z. Patek, Z. Janda, On the Development of the ANULOID, an Innovative Disk Shaped VTOL Aircraft for Urban Areas, Advances in Aircraft and Spacecraft Science,2015