“Istota Licencji Dorozumianej: [The Essence of an Implied Licence]”. Studia Prawnicze / The Legal Studies, no. 1-4 (119-122) (April 30, 1994): 79–98. Accessed October 6, 2025. https://czasopisma.inp.pan.pl/index.php/sp/article/view/3438.