Unterschütz, J. (2020). 
	Selected Instruments of Collective Labour Law in the Light of the European Social Charter (Revised), the EU Charter of  Fundamental Rights, the ILO Conventions and the European Pillar of Social Rights. Studia z Zakresu Prawa Pracy i Polityki Społecznej (Studies on Labour Law and Social Policy), 2020, 53-65. doi: https://doi.org/10.4467/25444654SPP.20.006.11722