Ozler, H., and S. Pehlivan. “Comparison of Pollen Morphological Structures of Some Taxa Belonging to <i>Asparagus</i> L. and <i>Fritillaria</I> L. (Liliaceae) from Turkey”. Bangladesh Journal of Botany, vol. 36, no. 2, Oct. 2008, pp. 111-20, doi:10.3329/bjb.v36i2.1498.