Voss, M., Wolff, B., Savitskaia, N., Ungefroren, H., Deppert, W., Schmiegel, W., Kalthoff, H., & Naumann, M. (1999). TGF beta-induced growth inhibition involves cell cycle inhibitor p21 and pRb independent from p15 expression. International Journal of Oncology, 14(1), 93-101.