An austrian painter who is not that well known is Egon Schiele (1890-1918), a protege of Gustav Klimt. Focussed on nudes and sexuality he was controversial. Despite he died young, the website "
Egon Schiele - The complete works " shows a remarkable mature portfolio. Quite nice to see how these works connect Klimt and Hundertwasser, who was very much inspired by Schiele.