@article{10_4064_ap_26_1_85_93,
     author = {L. Bieszk and E. Stasiak},
     title = {On density concomitants of the covariant curvature tensor in the two- and three-dimensional {Riemann} space},
     journal = {Annales Polonici Mathematici},
     pages = {85--93},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1972},
     doi = {10.4064/ap-26-1-85-93},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-26-1-85-93/}
}