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.
Kádár I I, Ricz S, Végh J, Sulik B, Varga D, Berényi D.Kádár I I, et al. Among authors: varga d.Phys Rev A. 1990 Apr 1;41(7):3518-3533. doi: 10.1103/physreva.41.3518.Phys Rev A. 1990.PMID: 9903522No abstract available.