Clark, M.S., Gage, S.H. (1997): The effects of free-range domestic birds on the abundance of epigeic predators and earthworms. Applied Soil Ecology, 5: 255-260.
Clark, M.S., Worland, M.R. (2008): How insects survive the cold: molecular mechanisms - a review. Journal of Comparative Physiology B, 178: 917-933.
Clark, R.J. (1967): Centipede in stomach of young Vipera ammodytes meridionalis. Copeia, 1967: 224.
Clark, V.C., Raxworthy, C.J., Rakotomalala, V., Sierwald, P., Fisher, B.L. (2005): Convergent evolution of chemical defense in poison frogs and arthropod prey between Madagascar and the Neotropics. PNAS, 102: 11617-11622.