@article{MAN_1971__191_162126,
     author = {J. FROEMKE},
     title = {Maximal {Primal} {Clusters} {Are} {Infinite.}},
     journal = {Mathematische Annalen},
     pages = {99--120},
     publisher = {mathdoc},
     volume = {191},
     year = {1971},
     zbl = {0251.08008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1971__191_162126/}
}