@article{CMH_1985__60_140029,
     author = {F. Knop and H. Lange},
     title = {Some remarks on compactifications of commutative algebraic groups.},
     journal = {Commentarii mathematici Helvetici},
     pages = {497--507},
     publisher = {mathdoc},
     volume = {60},
     year = {1985},
     zbl = {0587.14030},
     url = {http://geodesic.mathdoc.fr/item/CMH_1985__60_140029/}
}