@article{Tozzi_2022,
title={The optically elusive,
changing-look active nucleus in NGC 4156},
volume={667},
ISSN={1432-0746},
url={http://dx.doi.org/10.1051/0004-6361/202244987},
DOI={10.1051/0004-6361/202244987},
journal={Astronomy & Astrophysics},
publisher={EDP Sciences},
author={Tozzi,
Giulia and Lusso,
Elisabeta and Casetti,
Lapo and Romoli,
Marco and Andreuzzi,
Gloria and Montoya Arroyave,
Isabel and Nardini,
Emanuele and Cresci,
Giovanni and Middei,
Riccardo and Bertolini,
Silvia and Calabretto,
Paolo and Cammelli,
Vieri and Cuadra,
Francisco and Dalla Ragione,
Marco and Marconcini,
Cosimo and Miceli,
Adriano and Mini,
Irene and Palazzini,
Martina and Rotellini,
Giorgio and Saccardi,
Andrea and Samà,
Lavinia and Sangalli,
Mattia and Serafini,
Lorenzo and Spaccino,
Fabio},
year={2022},
month=nov,
pages={L12} }