References:
Dedonder RA, Lepesant JA, Lepesant-Kejzlarová J, Billault A, Steinmetz M, Kunst F. Construction of a kit of reference strains for rapid genetic mapping in Bacillus subtilis 168. Applied and Environmental Microbiology. 1977 Apr;33(4):989–993. DOI: 10.1128/aem.33.4.989-993.1977 PMID: 405929 PMCID: PMC170805
McCarthy C, Nester EW. Heat-sensitive step in deoxyribonucleic acid-mediated transformation of Bacillus subtilis. Journal of Bacteriology. 1969 Jan;97(1):162-165. DOI: 10.1128/jb.97.1.162-165.1969 PMID: 4974386, PMCID: PMC249569
Jarvis ED, Widom RL, LaFauci G, Setoguchi Y, Richter IR, Rudner R. Chromosomal organization of rRNA operons in Bacillus subtilis. Genetics. 1988 Nov;120(3):625-635. DOI: 10.1093/genetics/120.3.625 PMID: 2465199, PMCID: PMC1203540