Johnson, D. S., Davidson, B., Brown, C. D., Smith, W. C., & Sidow, A. (2004). Noncoding regulatory sequences of Ciona exhibit strong correspondence between evolutionary constraint and functional importance. Cold Spring Harbor Laboratory Press.

Johnson, David S., Brad Davidson, Christopher D. Brown, William C. Smith, a Arend Sidow. Noncoding Regulatory Sequences of Ciona Exhibit Strong Correspondence between Evolutionary Constraint and Functional Importance. Cold Spring Harbor Laboratory Press, 2004.

Johnson, David S., et al. Noncoding Regulatory Sequences of Ciona Exhibit Strong Correspondence between Evolutionary Constraint and Functional Importance. Cold Spring Harbor Laboratory Press, 2004.