@article{10.30755/NSJOM.03525,
     author = {R. A. R. Monzo},
     title = {Groupoids determined by involutive automorphisms on semilattices of groups
},
     journal = {Novi Sad Journal of Mathematics},
     pages = {1 - 19},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {2018},
     doi = {10.30755/NSJOM.03525},
     url = {http://geodesic.mathdoc.fr/articles/10.30755/NSJOM.03525/}
}