TY - GEN A1 - Popa, Valeriu PB - Wydawnictwo Uniwersytetu Śląskiego PB - De Gruyter Open L1 - http://www.sbc.org.pl/Content/177721/PDF/09-paper.pdf L2 - http://www.sbc.org.pl/Content/177721 KW - matematyka T1 - A general fixed point theorem for implicit cyclic multi-valued contraction mappings UR - http://www.sbc.org.pl/dlibra/publication/edition/177721 ER -