@article{JAC_2012__36_3_a6,
     author = {Michos, Ioannis C.},
     title = {On twin and anti-twin words in the support of the free {Lie} algebra},
     journal = {Journal of Algebraic Combinatorics},
     pages = {355--388},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2012__36_3_a6/}
}