@article{CMH_1991__66_4_140224,
     author = {Martin Arkowitz and Gregory Lupton},
     title = {Rational {Co-H-Spaces.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {79--108},
     publisher = {mathdoc},
     volume = {66},
     number = {4},
     year = {1991},
     zbl = {0724.55009},
     url = {http://geodesic.mathdoc.fr/item/CMH_1991__66_4_140224/}
}