%0 Journal Article %A Knessl, Charles %A Szpankowski, Wojciech %T Enumeration of Binary Trees and Universal Types %J Discrete mathematics & theoretical computer science %D 2005 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.354/ %R 10.46298/dmtcs.354 %G en %F DMTCS_2005_7_a12