Amination of quinolones with morpholine derivativesLippur, Kristin; Tiirik, Tõnis; Kudrjašova, Marina; Järving, Ivar; Lopp, Margus; Kanger, TõnisTetrahedron2012 / p. 9550-9555 : ill https://www.sciencedirect.com/science/article/pii/S004040201201472X