AMG4PSBLAS is available from the web site
where contact points for further information can be also found. The software is available under a modified BSD license, as specified in Appendix A; please note that some of the optional third party libraries may be licensed under a different and more stringent license, most notably the GPL, and this should be taken into account when treating derived works.
The library defines a version string with the constant

whose current value is 1.2.
The main development team for AMG4PSBLAS is:
Pasqua D’Ambra, IAC-CNR, IT;
Fabio Durastante, University of Pisa and IAC-CNR, IT;
Salvatore Filippone, University of Rome Tor-Vergata and IAC-CNR, IT;
Other contributors:
Luca Pepè Sciarria;
Andea Di Iorio;
Zaak Beekman;
Ambra Abdullahi Hassan.
When using the library, please cite the following:
@article {MR4331965,
AUTHOR = {D’Ambra, Pasqua and Durastante, Fabio and Filippone, Salvatore},
TITLE = {A{MG} preconditioners for linear solvers towards extreme
scale},
JOURNAL = {SIAM J. Sci. Comput.},
FJOURNAL = {SIAM Journal on Scientific Computing},
VOLUME = {43},
YEAR = {2021},
NUMBER = {5},
PAGES = {S679--S703},
ISSN = {1064-8275,1095-7197},
MRCLASS = {65F50 (65F08 65F10 65N55 65Y05)},
MRNUMBER = {4331965},
MRREVIEWER = {Yongzhong\ Song},
DOI = {10.1137/20M134914X},
}
@Misc{psctoolkit-web-page,
author = {D’Ambra, Pasqua and Durastante, Fabio and Filippone, Salvatore},
title = {{PSCToolkit} {W}eb page},
url = {https://psctoolkit.github.io/},
howpublished = {\url{https://psctoolkit.github.io/}},
year = {2021}
}