1. Normal Distribution: Characterizations with Applications.;Bryc,1995
2. Bryc, W., 1998. Stationary random fields with linear regressions. Ann. Probab., to appear.
3. Bryc, W., Plucińska, A., 1985. A characterization of infinite Gaussian sequences by conditional moments. Sankhya A Vol. 47, 166–173.
4. An Introduction to Orthogonal Polynomials.;Chihara,1978
5. Koekoek, R., Swarttouw, R.F., 1998. The Askey-scheme of hypergeometric orthogonal polynomials and its q-analogue. Report No. 98-17, Delft University of Technology, WWW: http://aw.twi.tudelft.nl/ koekoek/askey.html