@TECHREPORT{ZiePhiSon07, author = {Zien, Alexander and Philips, Petra and Sonnenburg, S\"oren}, title = "{Computing Positional Oligomer Importance Matrices (POIMs)}", institution = "Fraunhofer Institute FIRST", year = "2007", type = "Research Report; Electronic Publication", number = "2", month = "December", pdf = "http://publica.fraunhofer.de/eprints/N-66645.pdf" }