(В библиографии: Barber, E.J.W. 1975 ...)
"It might be at least of anecdotal interest that in Esperanto, too..."
"It is remarkable that Esperanto shows the same pattern here as Georgian and Ancient Germanic, which is not represented in any modern European language. Apparently here the inventor of Esperanto had an intuition without a direct model, but well in keeping with the possibilities of natural language."
Из статьи M.Haspelmath "Transitivity Alternations of Anticausative Type", Arbeitspapiere des Kölner Instituts der Sprachwissenschaft, 1987