HΦ is cited in “Systematic Quantum Cluster Typical Medium Method for the Study of Localization in Strongly Disordered Electronic Systems” !

In this review (arXiv , Appl. Sci. 2018, 8(12), 2401 ), they overview the recent progress of quantum cluster typical medium method and its applications
to localization in strongly disordered electronic systems.
As a typical example of exact diagonalizing software, which can
perform large-scale matrix vector multiplications,
they cite HΦ.