Komaniecka-Łyp M. Roman W. Ingarden In the Files of the Security Service . 31. In: Sosnowski L , editor. Meetings: Roman Ingarden in Recollections [Internet]. Poland: Księgarnia Akademicka Publishing; 2020 [cited 2025 Jun. 27]. Available from: https://books.akademicka.pl/publishing/catalog/book/104/chapter/1443