Together with Joseph Taste suggested that these objects are in process of accretion of matter and correctly interpret their light curve change as coming from the accretion disk impacted through a narrow stream of matter flowing through the inner Lagrange point of less massive component of binary star system.

The marked eclipse of U Geminorum repeated with a period of 4 hours 14 minutes and 45 seconds for the first time clearly demonstrating that we are dealing with a double system.

In his original model Krzemiński interpreted the observed changes in the light curve as a consequence of the uneven luminous surface of a white dwarf.

Correct model of the system was introduced by Józef Smak, which is for a binary system containing a white dwarf and filling Roche surface of star in main sequence, made the accretion disc and the so-called "hot spot" that is the place where accreting matter collides with the disc.

It is the emergence of "hot spots" behind the disc and its eclipse by the secondary component that was responsible for the unusual appearance of the light curve of U Geminorum.