Yadav, S. N. “A Study of Z-Magnitude Dependence in the Spatial Orientation of Angular Momentum Vectors of Galaxies Having Redshift < 30,000 Km S-1”. Tribhuvan University Journal, vol. 30, no. 2, Dec. 2016, pp. 195-10, doi:10.3126/tuj.v30i2.25564.