@article{AUCMP_2007__48_1_a3,
     author = {Trch, Milan},
     title = {Groupoids and the associative law {VIIA.} {(SH-groupoids} of type {(A,} {B,} {A)} and their semigroup distances)},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {43--54},
     publisher = {mathdoc},
     volume = {48},
     number = {1},
     year = {2007},
     mrnumber = {2517610},
     zbl = {1153.20049},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/AUCMP_2007__48_1_a3/}
}