Kettle, C., Arthur, W., Jowett, T., Minelli, A. (1999):Homeotic transformation in a centipede. Trends in Genetics, 15: 393.
Kettle, C., Arthur, W., Jowett, T., Minelli, A. (2000): A homeotically-transformed specimen of Strigamia maritima (Chilopoda, Geophilomorpha), and its morphological, developmental and evolutionary implications. In: Wytwer, J., Golovatch, S. (eds.): Progress in Studies on Myriapoda and Onychophora. Warszawa. Fragm. faun., 43 (Suppl.): 105-112.
Kettle, C., Johnstone, J., Jowett, T., Arthur, H., Arthur, W. (2003): The pattern of segment formation, as revealed by engrailed expression, in a centipede with a variable number of segments. Evolution and Development, 5: 198-207.