1. A. De Rossi, A strengthened Cauchy-Schwarz inequality for biorthogonal wavelets, Math. Inequal. Appl., 2 (1999), 263–282.
2. S. S. Dragomir, Advances in Inequalities of the Schwarz, Triangle and Heisenberg Type in Inner Product Spaces, Nova Science Publishers, NY, 2007.
3. S. S. Dragomir, Advances in Inequalities of the Schwarz, Grüss and Bessel Type in Inner Product Spaces, Nova Science Publishers, Inc., Hauppauge, NY, 2005.
4. S. S. Dragomir, Discrete Inequalities of the Cauchy-Bunyakovsky-Schwarz Type, Nova Science Publishers, Inc., Hauppauge, NY, 2004.
5. S. S. Dragomir and B. Mond, On the superadditivity and monotonicity of Schwarz’s inequality in inner product spaces, Contributions, Macedonian Acad. of Sci. and Arts, 15(2) (1994), 5–22.