@article{MOMA_1977__83_177802,
     author = {V.J. Baston and F.A. Bostock},
     title = {Join {Operations} in {Vector} {Spaces.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {93--98},
     year = {1977},
     volume = {83},
     zbl = {0359.52001},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1977__83_177802/}
}