A. Seiler, A. Visan, I. Pohl, E. Genschow, R. Buesen, and H. Spielmann, “[Improving the embryonic stem cell test (EST) by establishing molecular endpoints of tissue specific development using murine embryonic stem cells (D3 cells)] [Article in German]”, ALTEX, vol. 19, no. Supp. 1, pp. 55–63, Jan. 2002.