@article{MAN_1974__209_162587,
     author = {Peter Klein},
     title = {Der freie {Schleifenraum} f\"ur {R\"aume} mit fast freier rationaler {Kohomologie-Algebra.}},
     journal = {Mathematische Annalen},
     pages = {91--98},
     publisher = {mathdoc},
     volume = {209},
     year = {1974},
     zbl = {0267.55011},
     url = {http://geodesic.mathdoc.fr/item/MAN_1974__209_162587/}
}