1. Die Embryobildung bei Nigritella nigra;Afzelius;Sv. Bot. Tidskr.,1928
2. Morphological and embryological studies in the family Olacaceae. I. Olax L;Agarwal;Phytomorphology,1963
3. Morphological and embryological studies in the family Olacaceae. II. Strombosia Blume;Agarwal;Phytomorphology,1963
4. Nucellar polyembryony in Momordica charantia Linn;Agrawal;Sci. Cult.,1957
5. A histochemical study of embryo sac development in Vanda (Orchidaceae);Alvarez;Caryologia,1965