Okwany, I. O., G. K. R. Rao, A. Manyonge, and N. B. Okelo. “NEW SCHWARZ NORMS ON B(H)”. IJRDO -JOURNAL OF MATHEMATICS, Vol. 1, no. 2, June 2015, pp. 10-17, doi:10.53555/m.v1i2.2405.