Potočnik's "Das Problem der Befahrung des Weltraumswas" was the first book to devote most of its pages to space stations. In the book he proposed the inhabitable wheel design. This strongly influenced the work of technicians and researchers, as well as of science fiction authors. It inspired many space station designs during the 1950s, even those appearing in 2001: A Space Odyssey and in a Russian movie Doroga k zvezdam.
 

2001: A Space Odyssey (1969)

Doroga k zvezdam (1958)

The Wohnrad had an outer diameter of 50 metres (164 feet), and rotated about axis in order to create artificial gravity in the inhabitable outer ring. This contained cabins, laboratories, workshops, kitchen, and bathroom. There was also a circular gallery, with potholes used for observing the Earth and the stars. There was also a lift shaft and two staircases leading to the "hub", with a rotating airlock.

The station's energy would be provided by two large concave mirrors to focus solar radiation onto heat pipes containing a liquid wich would vapourise and operate turbines to produce a continuous electrical current. The vapour would condense in other pipes shaded from the Sun.

(Source: Deutsches Museum, München/Encyclopedia Cambridge, Space, page 29)

Size comparison of the Russian space station Mir and
Potočnik's space station