Schomburg I, Chang A, Hofmann O, Ebeling C, Ehrentreich F, Schomburg D (January 2002). "BRENDA: a resource for enzyme data and metabolic information". Trends in Biochemical Sciences. 27 (1): 54–6. doi:10.1016/s0968-0004(01)02027-8. PMID11796225.
Krogh A, Larsson B, von Heijne G, Sonnhammer EL (January 2001). "Predicting transmembrane protein topology with a hidden Markov model: application to complete genomes". Journal of Molecular Biology. 305 (3): 567–80. doi:10.1006/jmbi.2000.4315. PMID11152613.
Schomburg I, Chang A, Hofmann O, Ebeling C, Ehrentreich F, Schomburg D (January 2002). "BRENDA: a resource for enzyme data and metabolic information". Trends in Biochemical Sciences. 27 (1): 54–6. doi:10.1016/s0968-0004(01)02027-8. PMID11796225.
Krogh A, Larsson B, von Heijne G, Sonnhammer EL (January 2001). "Predicting transmembrane protein topology with a hidden Markov model: application to complete genomes". Journal of Molecular Biology. 305 (3): 567–80. doi:10.1006/jmbi.2000.4315. PMID11152613.