@misc{Polski_Rejestr_Statków_Rules,
 author={Polski Rejestr Statków},
 howpublished={online},
 publisher={Polski Rejestr Statków},
 language={eng},
 title={Rules for the classification and construction of mobile offshore drilling units. Pt. 1, Classification regulations : 2019 July},
 type={e-książka},
 keywords={platformy wiertnicze},
}