@article{10_4064_cm_30_2_193_201,
     author = {Hartmut H\"oft},
     title = {On the semilattice of extensions of a partial algebra},
     journal = {Colloquium Mathematicum},
     pages = {193--201},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1974},
     doi = {10.4064/cm-30-2-193-201},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-30-2-193-201/}
}