@patent{Ksawery Kuligowski2023, author = "Ksawery Kuligowski and Łukasz Breńkacz", filing_date = "2023-10-31", issue_date = "0000-00-00", patent_number = "P.446564", title = "{S}urfująca turbina wodna [{S}urfing water turbine", year = "2023", }