Resolution of four large chromosomes in penicillin-producing filamentous fungi : the penicillin gene cluster is located on chromosome II (9.6 Mb) in Penicillium notatum and chromosome I (10.4 Mb) in Penicillium chrysogenum Fierro, F.; Gutierrez, S.; Diez, B.; Martin, J.F. Mgg. Molecular and General Genetics 241(5-6): 573-578 1993 0026-8925 https://eurekamag.com/research/077/610/077610923.php