C. Howell

Relative rates of evolution in the coding and control regions of African mtDNAs.

D. Turnbull, N. Howell, J. Elson, 2007, Molecular biology and evolution.

Molecular clock debate: Time dependency of molecular rate estimates for mtDNA: this is not the time for wishful thinking

N. Howell, J. Elson, C. Howell, 2008, Heredity.