McMullen, J. R. (1972). Extensions of positive-definite functions. [American Mathematical Society].
Cita Chicago (17th ed.)McMullen, John R. Extensions of Positive-definite Functions. [Providence, R.I.]: [American Mathematical Society], 1972.
Cita MLA (8th ed.)McMullen, John R. Extensions of Positive-definite Functions. [American Mathematical Society], 1972.
Atenció: Aquestes cites poden no estar 100% correctes.