A. F. DYER, J. C. PARKS, and S. LINDSAY, “HISTORICAL REVIEW OF THE UNCERTAIN TAXONOMIC STATUS OF CYSTOPTERIS DICKIEANA R.SIM (DICKIE’S BLADDER FERN)”, Edinburgh J. Bot., vol. 57, no. 1, pp. 71–81, Dec. 2000, doi: 10.1017/S0960428600000056.