Quantizing time: Interacting clocks and systems. - Alexander R. H. Smith; Mehdi Ahmadi (Quantum, 2019)

Generalized probability rules from a timeless formulation of Wigner's friend scenarios. - Veronika Baumann; Flavio Del Santo; Alexander R. H. Smith; Flaminia Giacomini; Esteban Castro-Ruiz; Caslav Brukner (Quantum, 2021)

Quantum time dilation in a gravitational field. - Jerzy Paczos; Kacper Debski; Piotr T. Grochowski; Alexander R. H. Smith; Andrzej Dragan (Quantum, 2024)