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 ### References
 
 1. BURKHOLDER PR, GILES NH Jr. Induced biochemical mutations in Bacillus subtilis. Am J Bot. 1947 Jun; 34(6):345-8.
-2. 2. Jan-Willem Veening, Heath Murray and Jeff Errington. A mechanism for cell cycle regulation of sporulation initiation in Bacillus subtilis. Genes Dev. 2009, 23.
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+2. Jan-Willem Veening, Heath Murray and Jeff Errington. A mechanism for cell cycle regulation of sporulation initiation in Bacillus subtilis. Genes Dev. 2009, 23.
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