@InProceedings{, title = "{M}atching and {M}odifying with {G}enerics", author= "Brown, Neil C. C. and Sampson, Adam T.", editor= "Peter Achten and Pieter Koopmann and Marco Moraz\'{a}n", pages = "304--318", booktitle= "{T}rends in {F}unctional {P}rogramming ({TFP}) 2008", note = "Draft Proceedings", year= "2008", month= "May", }