Odkazy:
[1] https://www.pzvar.sk/sites/default/files/zvarac_1_2028_uvod_obsah_net_1.pdf
[2] https://www.pzvar.sk/sites/default/files/zvarac_2_2018_obsah_uvod_net.pdf
[3] https://www.pzvar.sk/sites/default/files/zvarac_uvod_obsah_3_2018_net.pdf
[4] http://www.pzvar.sk/sites/default/files/uvod_obsah_4_2018_0.pdf