Szroeter, Jerzy - In: Statistics & Probability Letters 13 (1992) 1, pp. 73-81
Let X be a random variate whose distribution conditional on an unobservable variate Y is chi-square with s degrees of freedom and non-centrality parameter equal to Y. Upper and lower bounds for the unconditional d.f. of X are derived when only the values of location and randomness indices for Y...