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Estimation of the number of consecutive quadratic residues / T. A. Preobrazhenskaya. //Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2009. № 1. P. 24-28 [Moscow Univ. Math. Bulletin. Vol. 64, N 1, 2009. P. 24-28].

The problem of estimation of the maximal number H of consecutive integer numbers such that they all are either quadratic residues or quadratic nonresidues modulo a prime number p is considered.