1. Quantum ESPRESSO official web site,
http://www.quantum-espresso.org
2. Frigo, M., Johnson, S.G.: The Design and Implementation of FFTW3. Proceedings of the IEEE 93, 216 (2005)
3. FFTE: A Fast Fourier Transform package,
http://www.ffte.jp/
4. Developer’s Manual for Quantum ESPRESSO,
http://www.quantum-espresso.org/?page_id=47
5. Spiga, F.: Implementing and Testing Mixed Parallel Programming Model into Quantum ESPRESSO. In: Science and Supercomputing in Europe - research highlights 2009, CINECA Consorzio Interuniversitario, Bologna (2010)