“The Law On Economic Activity With the Participation of Foreign Parties of December 23, 1988: Dz. U. 1988 Nr 41, Poz. 325”. Contemporary Central & East European Law, no. 3-4(79-80), Dec. 1988, pp. 103-12, https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1354.