Lukas Käll Anders Krogh Erik L. L. Sonnhammer Advantages of combined transmembrane topology and signal peptide prediction - the Phobius web server. 429-432 2007 35 Nucleic Acids Research Web-Server-Issue http://dx.doi.org/10.1093/nar/gkm256 db/journals/nar/nar35.html#KallKS07