@article{10_4171_dm_290,
     author = {Orr Shalit and Baruch Solel},
     title = {Subproduct systems},
     journal = {Documenta mathematica},
     pages = {801--868},
     year = {2009},
     volume = {14},
     doi = {10.4171/dm/290},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/290/}
}