S. Rehman, B. Prabakaran, W. El-Harouni, M. Shafique, J. Henkel:
"Heterogeneous Approximate Multipliers: Architectures and Design Methodologies";
in: "Approximate Circuits: Methodologies and CAD", Springer International Publishing, Switzerland, 2019, ISBN: 978-3-319-99321-8, 45 - 66.
http://dx.doi.org/10.1007/978-3-319-99322-5_3