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.
Nath HB, Griffiths RC.Nath HB, et al. Among authors: griffiths rc.J Math Biol. 1993;31(8):841-51. doi: 10.1007/BF00168049.J Math Biol. 1993.PMID: 8263428
Griffiths RC, Tavaré S.Griffiths RC, et al.Philos Trans R Soc Lond B Biol Sci. 1994 Jun 29;344(1310):403-10. doi: 10.1098/rstb.1994.0079.Philos Trans R Soc Lond B Biol Sci. 1994.PMID: 7800710