@misc{_Guidelines,
 howpublished={online},
 publisher={Polski Rejestr Statków},
 language={eng},
 title={Guidelines regarding the requirements for marine diesel engines fitted with NOx selective catalytic reduction (SCR) systems, 2018 January},
 type={e-książka},
 keywords={statki, środki bezpieczeństwa, normy, silniki Diesla okrętowe, transport morski},
}