Scherowsky, Günter, and Michael Sefkow. 1993. “Stereoselective Synthesis of Optically Active Di- and Trisubstituted Oxetanones As Chiral Dopants to Induce Ferroelectricity in Liquid Crystals”. CHIMIA 47 (1-2): 19. https://doi.org/10.2533/chimia.1993.19.