Classifications of quasigroups of order 4 by parastrophic quasigroups tranformation - Popovska Mitrovikj, Aleksandra; Dimitrova, Vesna; Bakeva, Verica; Krapez, Aleksandar (My University, 2011)
Parastrophic operation Name x\y= z⇐⇒ x∗ z= y left division x/y= z⇐⇒ z∗ y= x right division x· y= z⇐⇒ y∗ x= z opposite multiplication x//y= z⇐⇒ y/x= z⇐⇒ z∗ x= y opposite right division x\\y= z⇐⇒ y\x= z⇐⇒ y∗ z= x opposite left division