Štefunko begins with his freelance work two years after coming to Martin and soon becomes one of the founders of Slovak sculpture.
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In addition to the statues of many important personalities of Slovak history such as Pavol Országh Hviezdoslav or Ján Kollár and tombs of others (Miloslav Schmidt) he also dedicated his time to monuments in the field of Slovak history (historical figures, the World Wars, Slovak National Uprising).