@article{10_1017_S0017089500007916,
     author = {Steiner, Richard},
     title = {Multiple semidirect products of associative systems},
     journal = {Glasgow mathematical journal},
     pages = {353--369},
     year = {1989},
     volume = {31},
     number = {3},
     doi = {10.1017/S0017089500007916},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007916/}
}