Bhardwaj, D. (1967) “1. Miospores in the Coal Seams of the Carboniferous of Great Britain by A. H. V. Smith & M. A. Butterworth 2. The Systematics and Distribution of Permian Miospores by G. F. Hart ”, Journal of Palaeosciences, 16((1-3), pp. 301–303. doi: 10.54991/jop.1967.532.