1992, mixed media on wood, 42x45 cm, signed lower right „S. I. 92“
1991, wood, cast metal, 62x42 cm, signed center „Lukáč 91“
2004, oil on plywood, 49x39 cm, signed lower right „Stankovič 2004“
2007, oil on canvas, 45x45 cm, signed lower right „Stankovič 2007“
2003, oil on canvas, 16x22,5 cm, signed lower right „Zuzana B. 03“
1998, pastel on paper, 76x59 cm, signed lower left „Adolf Benca 98“ and lower right „Adolf Benca“
sepia, pencil on paper, 38x28cm, signed upper left „A. Benca“
1996, pastel on paper, 38x28 cm, signed lower right „Benca 1996“
2000, etching, dry point on paper (5/45), 39,5x30cm, signed lower right „D. Brunovský“
2003, bronze, patina (A/E), height 34 cm, signed on back side „Hobor“
2020, mixed media on canvas, 70x50cm, signed lower left „J. Piačková“
2017, oil, acrylic on canvas, 101,5x136 cm, signed lower right „Igor Piačka 2017“
etching on paper (43/100), 15,5x22,5 cm, signed lower right „Katarína Vavrová“