Lumen is a many-body perturbation theory code for the study of excited states and optical response.
The code is derived by the Yambo code. While in the first versions there will be a full compatibility with the code Yambo we expect with time that the two code will deviate.
Anyway we will do our best to maintain compatibility of Tutorials, Inputs and IO interface with YamboPy
If you want to cite the Lumen code please write something like “calculation performed using the Lumen fork of the Yambo code” 
plus the standard citation to the Yambo code:
Many-body perturbation theory calculations using the yambo code
D. Sangalli, A. Ferretti, H. Miranda, C. Attaccalite, I. Marri, E. Cannuccia, P.M. Melo, M. Marsili, F. Paleari, A. Marrazzo, G. Prandini, P. Bonfa’, M. O. Atambo, F. Affinito, M. Palummo, A. Molina Sanchez, C. Hogan, M. Grüning, D. Varsano and A. Marini
Journal of Physics: Condensed Matter31 325902 (2019)
Hereafter the old one
yambo: An ab initio tool for excited state calculations
A. Marini, C. Hogan, M. Grüning, and D. Varsano
Computer Physics Communications 180, 1392 (2009)
If you use YamboPy please cite it as:
YamboPy, ver. 0.4.0
F. Paleari, A. Molina-Sánchez, M. Nalabothula, R. Reho, M. Bonacci, J. M. Castelo, and J. Cervantes-Villanueva, M. Pionteck and M. Silvetti, C. Attaccalite and H. P. C. Miranda
Zenodo, https://doi.org/10.5281/zenodo.15012962 (2025)