He remained in this post until he retired in 1912 when Ehrenfest was appointed to his chair.
He remained in this post until he retired in 1912 when Ehrenfest was appointed to his chair.
user
Він залишався на цій посаді до виходу на пенсію в 1912 році, коли Еренфеста був призначений на свій стілець.
assistant