Piccardo, Marco, Chevalier, Paul, Schwarz, Benedikt, Kazakov, Dmitry, Wang, Yongrui, Belyanin, Alexey, and Capasso, Federico. Frequency-Modulated Combs Obey a Variational Principle. Physical Review Letters 122.25 Web. doi:10.1103/PhysRevLett.122.253901.

Piccardo, Marco, Chevalier, Paul, Schwarz, Benedikt, Kazakov, Dmitry, Wang, Yongrui, Belyanin, Alexey, & Capasso, Federico. Frequency-Modulated Combs Obey a Variational Principle. Physical Review Letters, 122 (25). https://doi.org/10.1103/PhysRevLett.122.253901

Piccardo, Marco, Chevalier, Paul, Schwarz, Benedikt, Kazakov, Dmitry, Wang, Yongrui, Belyanin, Alexey, and Capasso, Federico. "Frequency-Modulated Combs Obey a Variational Principle". Physical Review Letters 122 (25). Country unknown/Code not available: American Physical Society. https://doi.org/10.1103/PhysRevLett.122.253901. https://par.nsf.gov/biblio/10114701.

@article{osti_10114701,
place = {Country unknown/Code not available}, title = {Frequency-Modulated Combs Obey a Variational Principle}, url = {https://par.nsf.gov/biblio/10114701}, DOI = {10.1103/PhysRevLett.122.253901}, abstractNote = {Not Available}, journal = {Physical Review Letters}, volume = {122}, number = {25}, publisher = {American Physical Society}, author = {Piccardo, Marco and Chevalier, Paul and Schwarz, Benedikt and Kazakov, Dmitry and Wang, Yongrui and Belyanin, Alexey and Capasso, Federico}, }