Johann Karl Simon Morgenstern ja Georges Frédéric Parrot -tütarlaste hariduse edendajad 19. sajandi alguses Tartu õpperingkonnas = Johann Karl Simon Morgenstern and Georges Frédéric Parrot – promoters of girls' education in the Tartu school district at the beginning of the 19th centuryTohvri, EpiQui vult, potest : Karl Morgenstern 2502020 / lk. 205−223https://www.ester.ee/record=b5386802*est