@article{10_4064_ap_30_2_139_144,
     author = {Micha{\l} Lorens},
     title = {Extended rotation of the covariant vector density},
     journal = {Annales Polonici Mathematici},
     pages = {139--144},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1974},
     doi = {10.4064/ap-30-2-139-144},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-30-2-139-144/}
}