@article{JAC_2013__37_4_a7,
     author = {Lascoux, Alain and Novelli, Jean-Christophe and Thibon, Jean-Yves},
     title = {Noncommutative symmetric functions with matrix parameters},
     journal = {Journal of Algebraic Combinatorics},
     pages = {621--642},
     publisher = {mathdoc},
     volume = {37},
     number = {4},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2013__37_4_a7/}
}