Coherent microwave emission without population inversion: a new atomic frequency standard. - Aldo Godone; Filippo Levi; Jacques Vanier (IEEE Trans. Instrum. Meas., 1999)

Systematic shift uncertainty evaluation of IEN CSF1 primary frequency standard. - Filippo Levi; Luca Lorini; Davide Calonico; Aldo Godone (IEEE Trans. Instrum. Meas., 2003)

Frequency-Stability Performances of the Pulsed Optically Pumped Rubidium Clock: Recent Results and Future Perspectives. - Aldo Godone; Filippo Levi; Salvatore Micalizio; Elio K. Bertacco; Claudio E. Calosso (IEEE Trans. Instrum. Meas., 2007)

CLONETS - clock network services: Strategy and innovation for clock services over optical-fibre networks. - Przemyslaw Krehlik; Lukasz Sliwczynski; Jirí Dostál; Jan Radil; Vladimír Smotlacha; Radek Velc; Josef Vojtech; Mauro Campanella; Davide Calonico; Cecilia Clivati; Filippo Levi; Ondrej Cíp; et al. (ICTON, 2017)

Time and Frequency Distribution over fibre for Geodesy, Seismology and Industry. - Davide Calonico; Cecilia Clivati; Alberto Mura; Anna Tampellini; Martina Gertosio; Filippo Levi (ISPCS, 2018)

Coherent Interferometry over Telecom Networks for Time-Frequency Distribution and Geophysical Sensing. - Cecilia Clivati; Alberto Mura; Vivek Kuttippurath; Filippo Levi; Davide Calonico (ICTON, 2020)

Frequency Noise Characterization of Diode Lasers for Vapor-Cell Clock Applications. - Gaspare Antona; Michele Gozzelino; Salvatore Micalizio; Claudio E. Calosso; Giovanni A. Costanzo; Filippo Levi (IEEE Trans. Instrum. Meas., 2022)

Optically Loaded Strontium Lattice Clock With a Single Multi-Wavelength Reference Cavity. - Matteo Barbiero; Davide Calonico; Filippo Levi; Marco G. Tarallo (IEEE Trans. Instrum. Meas., 2022)

Atomic Clocks Technologies for Twin-Field QKD in Real World. - Cecilia Clivati; Alice Meda; Simone Donadello; Filippo Levi; Marco Genovese; Alberto Mura; Salvatore Virzì; Mirko Pittaluga; Zhiliang Yuan; Andrew J. Shields; Marco Lucamarini; Ivo Pietro Degiovanni; et al. (OFC, 2023)