[1] Belousov V.D.: Foundations of the theory of quasigroups and loops (in Russian). Izdat. Nauka, Moscow, 1967. MR 0218483

[2] Bruck R.H.: Some results in the theory of quasigroups. Trans. Amer. Math. Soc. 55 (1944), 19-52. MR 0009963 | Zbl 0063.00635

[3] Bruck R.H.: A Survey of Binary Systems. Springer-Verlag, Berlin-Gottingen-Heidelberg, 1958. MR 0093552 | Zbl 0141.01401

[4] Fenyves F.: Extra loops II. Publ. Math. Debrecen 16 (1969), 187-192. MR 0262409

[5] Issa A.N.: Gyrogroups and homogeneous loops. Reports Math. Phys. 44 (1999), 3 345-357. MR 1737383 | Zbl 0953.20055

[6] Kepka T.: Commutative Moufang loops and distributive Steiner quasigroups nilpotent of class $3$. Comment. Math. Univ. Carolinae 21 (1980), 355-370. MR 0580690 | Zbl 0439.20048

[7] Kikkawa M.: Geometry of homogeneous Lie loops. Hiroshima Math. J. 5 (1975), 141-179. MR 0383301 | Zbl 0304.53037

[8] Kunen K.: Moufang quasigroups. J. Algebra 183 (1996), 231-234. MR 1397396 | Zbl 0855.20056

[9] Kunen K.: Quasigroups, loops, and associative laws. J. Algebra 185 (1996), 194-204. MR 1409983 | Zbl 0860.20053

[10] Pflugfelder H.O.: Quasigroups and Loops: Introduction. Heldermann, Berlin, 1990. MR 1125767 | Zbl 0715.20043

[11] Robinson D.A.: Bol loops. Trans. Amer. Math. Soc. 123 (1966), 341-354. MR 0194545 | Zbl 0163.02001

[12] Robinson D.A.: Bol quasigroups. Publ. Math. Debrecen 19 (1972), 151-153. MR 0325829

[13] Sabinin L.V.: On the gyrogroups of Ungar. Russian Math. Surveys 50 (1995), 5 1095-1096. MR 1365062 | Zbl 0865.20054

[14] Sabinin L.V., Mikheev P.O.: On the law of composition of velocities in special relativity theory. Russian Math. Surveys 48 (1993), 5 183-185. MR 1258774 | Zbl 0814.53057

[15] Ungar A.A.: Thomas rotation and the parametrization of the Lorentz transformation group. Foundations Phys. Lett. 1 (1988), 1 57-89. MR 0962332

[16] Ungar A.A.: Thomas precession and its associated grouplike structure. Amer. J. Phys. 59 (1991), 9 824-834. MR 1126776