Horikawa, D. D., A. Yamaguchi, T. Sakashita, D. Tanaka, N. Hamada, F. Yukuhiro, H. Kuwahara, T. Kunieda, M. Watanabe, Y. Nakahara, S. Wada, T. Funayama, C. Katagiri, S. Higashi, S.-I. Yokobori, M. Kuwabara, L. Rothschild, T. Okuda, H. Hashimoto, and Y. Kobayashi (2012), Tolerance of Anhydrobiotic Eggs of the Tardigrade Ramazzottius varieornatus to Extreme Environments, Astrobiology, 12, 283-289.