Saulis, L. “Asymptotic Expansion for the Distribution and Density Functions of the Quadratic Form of a Stationary Gaussian Process in the Large Deviation Cramer Zone”. Nonlinear Analysis: Modelling and Control 6, no. 2 (December 5, 2001): 87–101. Accessed October 28, 2025. https://test.zurnalai.vu.lt/nonlinear-analysis/article/view/15218.