1. A generalization of a theorem of J. Holub
2. and , An Invitation to Operator Theory, Graduate Texts in Mathematics Vol. 50 (Amer. Math. Soc., Providence, RI, 2002).
3. and , Problems in Operator Theory, Graduate Texts in Mathematics Vol. 51 (Amer. Math. Soc., Providence, RI, 2002).
4. Weak*-continuity of Jordan triple products and its applications.