@ARTICLE{TreVloHel11,
    author = "Treder, Matthias Sebastian and {van der Vloed}, Gert and {van der Helm}, Peter",
    title = "Interactions between constituent single symmetries in multiple symmetry",
    journal = "Atten Percept Psychophys",
    year = "2011",
    volume = "73",
    number = "5",
    pages = "1487--1502",
    url = "http://dx.doi.org/10.3758/s13414-011-0115-9"
}