@misc{Ingarden_Roman_Stanisław_(1920-_)_An,
 author={Ingarden, Roman Stanisław (1920- )},
 copyright={Ingarden, Roman Stanisław},
 address={Toruń},
 howpublished={online},
 publisher={UMK},
 language={eng},
 type={preprint},
 title={An information-theoretical approach to the theory of lasers},
}