S. Verblunsky

On Positive Polynomials

S. Verblunsky, S. Verblunsky, 1945 .

On the Least Number of Unit Circles Which Can Cover a Square

S. Verblunsky, 1949 .

On Positive Harmonic Functions

S. Verblunsky, S. Verblunsky, 1936 .

On Positive Harmonic Functions: A Contribution to the Algebra of Fourier Series

S. Verblunsky, S. Verblunsky, 1935 .