Maisch M.w et Matzke A.t, Mikadocephalus gracilirostris n.gen., n.sp., a new ichthyosaur from the Grenzbitumenzone (Anisian-Ladinian) of Monte San Giorgio (Switzerland), Palaontologische Zeitschrift Palaontologische Zeitschrift (Print);Journal of Palaontologische Gesellschaft Scientific contributions to palaeontology, 71(3/4), 1997, pp. 267-289