2018, oil on cardboard, 25x30 cm, signed lower right „Hajko 18“
2017, oil on cardboard, 40x20 cm, signed lower right „Hajko 17“
1993, color etching on paper (38/99), 24,5x32,5 cm, signed lower right „Peter Kľúčik 1993“
1985, etching on paper (5/50), 14x10,5 cm, signed lower right „P. Kľúčik 85“
1992, lithography on paper (3/20), 27x22,5 cm, signed lower right „Peter Kľúčik 92“
1986, etching on paper (38/100), 15,5x9,5 cm, signed lower right „P. Kľúčik 1986“
1985, etching on paper (26/50), 21x15 cm, signed lower right „P. Kľúčik 1985“
colored serigraphy on paper (25/40), 36x29 cm, signed lower right „F. Kudláč“
colored serigraphy on paper (44/50), 36,6x30 cm, signed lower right „F. Kudláč“
colored serigraphy on paper (3/50), 37,2x30 cm, signed lower right „F. Kudláč“
colored serigraphy on paper (10/50), 37x30 cm, signed center down „F. Kudláč“
1994, colored lithography on paper (43/60), 60x43,5 cm, signed lower right „F. Kudláč 94“