Makowski, Armand M., LaVigna, Anthony., Baras, John S., "A Continuous-Time Distributed Version of Wald's Sequential Hypothesis Testing Problem", The 1986 IEEE International Symposium on Information Theory, p. 23, in Springer Lecture Notes in Control and Information Sciences and Vol. 83,, pp. 533-543, Ann Arbor, MI, October 6-9, 1986