1. Borchers, H. J.: On the structure of the algebra of field operators. Nuovo Cimento24, 214 (1962)
2. Borchers, H. J.: Algebraic aspects of Wightman field theory. In: Sen. R. N., Weil, C. (Eds.): Statistical mechanics and field theory. Haifa Lectures 1971. New York: Halsted Press 1972
3. Wyss, W.: On Wightman's theory of quantized fields. In: Lectures in theoretical physics. Boulder: University of Colorado 1968, New York: Gordon and Breach 1969
4. Ruelle, D.: Statistical mechanics. New York: Benjamin 1969
5. Loève, M.: Probability theory. Second edition. Princeton: van Nostrand 1960