Kandangwa, Obihang, et al. “Spatial Orientation of Angular Momentum Vectors: A Comparative Study of I-Band Spirals in SDSS Redshift Slices 0.13-0.14 and 0.14-0.15”. BIBECHANA, vol. 23, no. 2, May 2026, pp. 93-99, doi:10.3126/bibechana.v23i2.90213.