1. On the product of class A-semigroups of linear operators;Abdelaziz;Proc. Am. Math. Soc.,1983
2. On a pair of commutative contractions;Andô;Acta Sci. Math.,1963
3. Dilation Theory Yesterday and Today;Arveson,2010
4. Operator Algebras and Quantum Statistical Mechanics. 2;Bratteli,1997
5. The method of Chernoff approximation;Butko,2020