TANG, Mikkel; SCHÄFFER, Stefan Alaric. Det aktive atomur – en laser i sin reneste form. KVANT, [S. l.], v. 29, n. 4, 2018. DOI: 10.7146/kvant.168172. Disponível em: https://tidsskrift.dk/KVANT/article/view/168172. Acesso em: 31 aug. 2026.