The following publications are possibly variants of this publication:
- 1.5-V square-root domain second-order filter with on-chip tuningCarlos Aristoteles De la Cruz-Blas, Antonio J. López-Martín, Alfonso Carlosena. tcas, 52-I(10):1996-2006, 2005. [doi]
- 1.5-V square-root domain first-order filter with multiple operating pointsCarlos Aristoteles De la Cruz-Blas, Antonio J. López-Martín, Alfonso Carlosena, L. Hernandez, A. Sarmiento. iscas 2006: [doi]
- Multiple operating points in a square-root domain first-order filterCarlos Aristoteles De la Cruz-Blas, Antonio J. López-Martín, Alfonso Carlosena, Arturo Sarmiento. ijcta, 35(1):71-91, 2007. [doi]