@article{SLC_2007-2010_57_a1,
     author = {Rafael D{\'\i}az and Marcelo P\'aez},
     title = {An {Identity} in {Rota-Baxter} {Algebras}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {57},
     year = {2007-2010},
     url = {http://geodesic.mathdoc.fr/item/SLC_2007-2010_57_a1/}
}