@article{CRMATH_2009__347_17-18_991_0,
     author = {Franz, Uwe and Skalski, Adam},
     title = {A new characterisation of idempotent states on finite and compact quantum groups},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {991--996},
     publisher = {Elsevier},
     volume = {347},
     number = {17-18},
     year = {2009},
     doi = {10.1016/j.crma.2009.06.015},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2009.06.015/}
}