1989, tempera on paper, 24,5x40,5 cm, signed on back side „Ľ. Hološka“
1983, tempera on paper, 30x40 cm, signed on back side „Ján Berger“
1995, oil, tempera, collage on paper, 20x13 cm, signed lower left „N. F. 95“
1994, serigraphy on paper (433/500), 32,5x23 cm, signed lower right „Rudolf Sikora94“
1979, linocut on paper, 28x21 cm, signed lower right „Karol Hoffman 79“
2016, oil on canvas, 42x28 cm, signed center down „Kadera 2016“
2017, oil on canvas, 42x28 cm, signed center down „Kadera 2017“
1986, etching on paper, 66x48 cm, signed center down „A. Vojtášek 1986“
1985, etching on paper, 30,5x26,5 cm, signed lower right „Peter Kľúčik 1985“
1986, etching on paper (31/70), 29x43 cm, signed lower right „Peter Kľúčik 1986“
1989, etching on paper (56/70), 17,5x27 cm, signed lower right „P. Kľúčik 1989“
1993, etching on paper, 15,5x10 cm, signed lower right „P. Kľúčik 1993“
1990, etching on paper (34/80), 12x16,5 cm, signed lower right „P. Kľúčik 1990“
1985, etching on paper (42/50), 21x15 cm, signed lower right „P. Kľúčik 1985“
1995, mixed media on plywood, 70x130 cm, signed center down „Krivánek 95“