2015, acrylic, oil on plywood, 72,5x58 cm, signed lower right „Bobota 15“
1975, oil on cardboard, 50x35 cm, signed lower right „Trepáč 1975“
1971, gouache, watercolor on paper, 27x22 cm, signed lower right „Bilčík 71“
1983, oil on canvas, 47x98,5 cm, signed lower right „Bilčík 83“
1996, pastel on paper, 19x24 cm, signed lower left „Čechovský 96“
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“
2001, oil on fibreboard, 40x30 cm, signed center down „K. Ondreička 2001“
2000, oil on fibreboard, 40x30 cm, signed center down „Karol Ondreička 2000“
1994-1995, etching, mezzotint on paper (25/50), 60x49 cm, signed lower right „Krl Ondreička 94/95“
1996, etching on paper (31/50), 32,5x48,5 cm, signed lower right „Krl Ondreička 96“
1970, linocut on paper, 44x39 cm, signed lower right „Igor Rumanský 70“
1970, linocut on paper (9/15), 44x39 cm, signed lower right „Igor Rumanský 70“
1974, oil on canvas, 80x60 cm, signed center down „J. Jelenek 74“
1977, lithography on paper (7/20), 36x27 cm, signed lower right „Bočkay 77“
1992, etching, dry point on paper, 50x32 cm, signed lower right „Dušan Polakovič 1992“