The principle of equality as a fundamental norm in law and political philosophy, Jurysprudencja 8., Wojciechowski B., Bekrycht T., Cern K.M., (eds.), Wydawnictwo Uniwersytetu Łódzkiego, Łódź 2017The project was financed by National Science Centre Poland
(decision no. DEC-2012/05/B/HS5/01111)