Edwards YJ, Walter K, McEwen G, Vavouri T, Kelly KA, Abnizova I, Woolfe A, Goode DK, Goodson M, North P, Snell P, Callaway H, Smith SF, Gilks WR, Cooke JE, Elgar G. Characterisation of conserved non-coding sequences in vertebrate genomes using bioinformatics, statistics and functional studies. Comp Biochem Physiol Part D Genomics Proteomics. 2006 Mar; 1(1):46-58.