%0 Journal Article %A Sander Zwegers %T Rank-Crank type PDE's for higher level Appell functions %J Acta Arithmetica %D 2010 %P 263-273 %V 144 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa144-3-4/ %R 10.4064/aa144-3-4 %G en %F 10_4064_aa144_3_4