Rashid, H A, et al. “Heterosis and Combining Ability Estimates for the Total Number of Eggs Laid Per Female in Silkworm, <i>Bombyx mori< I> L”. University Journal of Zoology, Rajshahi University, vol. 30, May 2012, pp. 55-59, doi:10.3329/ujzru.v30i0.10754.