1. Azema, J. and Yor, M. (1979). Une solution simple au probleme de Skorokhod. Lecture Notes in Math. 721, Springer (90–115).
2. Cox, D. C. (1984). Some sharp martingale inequalities related to Doob’s inequality. IMS Lecture Notes Monograph Ser. 5 (78–83).
3. Doob, J. L. (1953). Stochastic Processes. John Wiley & Sons.
4. Dubins, L. E. and Gilat, D. (1978). On the distribution of maxima of martingales. Proc. Amer. Math. Soc. 68 (337–338).
5. Dubins, L. E. and Schwarz, G. (1988). A sharp inequality for sub-martingales and stopping times. Astérisque 157–158 (129-145).