@article{10_4064_aa144_3_4,
     author = {Sander Zwegers},
     title = {Rank-Crank type {PDE's} for higher level {Appell} functions},
     journal = {Acta Arithmetica},
     pages = {263--273},
     publisher = {mathdoc},
     volume = {144},
     number = {3},
     year = {2010},
     doi = {10.4064/aa144-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa144-3-4/}
}