@article{JRAM_1972__257_151269,
     author = {Walter Prenowitz and James Jantosciak},
     title = {Geometrics and {Join} {Spaces.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {100--128},
     publisher = {mathdoc},
     volume = {257},
     year = {1972},
     zbl = {0264.50002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__257_151269/}
}