Dirk van Delft, « Albert Einstein in Leiden », Physics Today, vol. 59, no 4, , p. 57–62 (DOI10.1063/1.2207039, lire en ligne). Voir p.57: « In 1912 Ehrenfest succeeded Hendrik Antoon Lorentz (1853–1928) as professor of theoretical physics at Leiden. ... In Leiden, the Ehrenfests moved into a Russian-style villa designed by Ehrenfest’s Russian wife Tatiana Afanashewa, a mathematician. »
Dirk van Delft, « Albert Einstein in Leiden », Physics Today, vol. 59, no 4, , p. 57–62 (DOI10.1063/1.2207039, lire en ligne). Voir p.57: « In 1912 Ehrenfest succeeded Hendrik Antoon Lorentz (1853–1928) as professor of theoretical physics at Leiden. ... In Leiden, the Ehrenfests moved into a Russian-style villa designed by Ehrenfest’s Russian wife Tatiana Afanashewa, a mathematician. »