@article{DMGAA_2009_29_1_a1,
     author = {Chajda, Ivan},
     title = {Horizontal sums of basic algebras},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {21--33},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2009_29_1_a1/}
}