@article{10_4064_ap_23_2_139_149,
     author = {M. A. McKiernan and H. Richards},
     title = {Characterization of some tensor concomitants of the metric tensor and vector fields under restricted groups of transformations},
     journal = {Annales Polonici Mathematici},
     pages = {139--149},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1970},
     doi = {10.4064/ap-23-2-139-149},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-23-2-139-149/}
}