Kapil, R.N. & Bhatnagar, A.K. 1972. Endosperm in Euphorbiaceae A critical appraisal: 376 393. In Advances in Plant Morphology. Rustogi Publishers, Meerut.
Bhatnagar, A.K. & Kapil, R.N. 1973. Bischofia javanica Its relationship with Euphorbiaceae. Phytomorphology 23: 263 267.
Kapil, R.N. & Bhatnagar, A.K. 1975. A fresh look at the process of double fertilization in angiosperms. Phytomorphology 25: 334 368.
Kapil, R.N. & Bhatnagar, A.K. 1976. Portuguese contributions to Indian Botany. Isis, Washington D. C. 67: 449 452.
Bhatnagar, A.K. & Garg, Meenakshi. 1977. Affinities of Daphniphyllum Palynological approach. Phytomorphology 27: 92 97.
Kapil, R.N. & Bhatnagar, A.K. 1978. The antipodes. Phyta 1: 54 75.
Bhatnagar, A.K. & Kapil, R.N. 1979. Ontogeny and taxonomic significance of anther in Bischofia javanica. Phytomorphology 29: 298 306.
Kapil, R.N. & Bhatnagar, A.K. 1980. Embryology in relation to angiosperm taxonomy: 272 295. In Glimpses in Plant Research (ed. P.K.K. Nair). Vikas Publishing House, New Delhi.
Kapil, R.N. & Bhatnagar, A.K. 1981. Ultrastructure and biology of female gametophyte in flowering plants. Int. Rev. Cytol. 70: 291 341.
Bhatnagar, A.K. & Kapil, R.N. 1982. Seed development in Daphniphyllum himalayense with a discussion on taxonomic position of Daphniphyllaceae. Phytomorphology 32: 66 81.