An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Romberg R, Heckmair N, Frigo SP, Ogurtsov A, Menzel D, Feulner P.Romberg R, et al. Among authors: frigo sp.Phys Rev Lett. 2000 Jan 10;84(2):374-7. doi: 10.1103/PhysRevLett.84.374.Phys Rev Lett. 2000.PMID: 11015914
Menzel A, Frigo SP, Whitfield SB, Caldwell CD, Krause MO.Menzel A, et al. Among authors: frigo sp.Phys Rev A. 1996 Sep;54(3):2080-2090. doi: 10.1103/physreva.54.2080.Phys Rev A. 1996.PMID: 9913697No abstract available.