@misc{Prvanović_Mileva_(1929-)_π-Projective,
 author={Prvanović, Mileva (1929-)},
 howpublished={online},
 publisher={nakł. UMCS},
 language={eng},
 type={artykuł},
 title={π-Projective Curvature Tensions},
 keywords={matematyka},
}