@article{SLC_2009_60_a1,
     author = {Helmut Prodinger},
     title = {A {Continued} {Fraction} {Expansion} for a {q-Tangent} {Function:} an {Elementary} {Proof}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {60},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/SLC_2009_60_a1/}
}