R. Ritchie

发表

K. Davies, S. Knight, M. Hirst, 1992, Biochimica et biophysica acta.

A. Sheridan, S. Carter, R. Tipping, 1998, Proceedings of the Society of Antiquaries of Scotland.

P. Olsen, R. Ritchie, 1997 .

R. Ritchie, J. King, 2000 .

J. LaSalle, M. Lalande, H. Glatt, 1998, Proceedings of the National Academy of Sciences of the United States of America.

J. Sedinger, D. Ward, J. Hupp, 2018, The Journal of Wildlife Management.

K. Davies, S. Knight, R. Harding, 1997, American journal of medical genetics.