Internet : http://www.ams.org/news?news_id=1746 (2019-02-12)
Internet : https://en.wikipedia.org/wiki/Robert_McCallum_Blumenthal (2019-02-12)
Internet : https://imstat.org/2013/04/02/obituary-bob-blumenthal-1931-2012/ (2019-02-12)
Markov processes and potential theory / R.M. Blumenthal and R.K. Getoor, New York
[etc], Academic Press, 1968.