[5] Basarab A.S., Belioglo A.I.: 
Universalno-avtomorfno-inversnye $\mathcal G$-lupy. Mat. Issled. 51 (1979), 3–7. 
MR 0544326[6] Belousov V.D.: 
Osnovy teorii kvazigrupp i lup. Nauka, Moskva, 1967. 
MR 0218483[7] Belousov V.D.: Vzaimmobratnye kvazigruppy i lupy. Izvestiia Akademii nauk Moldavskoi SSR 1963, issue 11, 3–10.
[9] Evans T.: 
On multiplicative systems defined by generators and relations, I. Normal form theorems. Proc. Cambridge Philos. Soc. 47 (1951), 637–649. 
MR 0043764 | 
Zbl 0043.02001[10] Evans T.: 
On multiplicative systems defined by generators and relations, II. Monogenic loops. Proc. Cambridge Philos. Soc. 49 (1953), 579–589. 
MR 0057865 | 
Zbl 0051.01102[11] Gvaramija A.A.: 
Ob odnom klasse lup. Moskov. Gos. Ped. Inst. Učen. Zap. No. 375 (1971), 25–34. 
MR 0323936[12] Greer M., Kinyon M.: Pseudoautomorphisms of Bruck loops and their generalizations. Comment. Math. Univ. Carolin. 53 (2012), no. 3, 383–389.
[13] Johnson K.W., Sharma B.L.: 
A variety of loops. Ann. Soc. Sci. Bruxelles Sér. I 92 (1975), 25–41. 
MR 0498926 | 
Zbl 0381.20056[14] Karkliňš B.B., Karkliň V.B.: Inversnyje lupy. Mat. Issled. 39 (1976), 87–101.
[15] Karkliňš B.B., Karkliň V.B.: Universalno-avtomorfno-inversnyje lupy. Mat. Issled. 39 (1976), 82–86.
[16] Keedwell A.D.: 
Crossed-inverse quasigroups with long inverse cycles and applications to cryptography. Australas. J. Combin. 20 (1999), 241–250. 
MR 1723878 | 
Zbl 0935.20061[17] Keedwell A.D., Shcherbacov V.A.: 
On $m$-inverse loops and quasigroups with a long inverse cycle. Australas. J. Combin. 26 (2002), 99–119. 
MR 1918146 | 
Zbl 1020.20041[20] Onoĭ V.I.: 
Solution of a problem on inverse loops (Russian). General algebra and discrete geometry 161 (1980), 53–58. 
MR 0647646[24] Sade A.: 
Paratopie et autoparatopie des quasigroupes. Ann. Soc. Sci. Bruxelles Sér. I 76 (1962), 88–96. 
MR 0152600 | 
Zbl 0105.01502[25] Syrbu P.: 
Loops with universal elasticity. Quasigroups Related Systems 1 (1994), 57–65. 
MR 1327946 | 
Zbl 0948.20047[26] Syrbu P.: 
On middle Bol loops. ROMAI J. 6 (2010), 229–236. 
MR 2786138