1. Chaudhuri A. and Mandal R. K. 1979 Interfamily hybridization in catfishes.Indian J. Exp. Biol. 17: 1150–1151
2. Cortadas J. and Pavan M. C. 1982 The organisation of ribosomal genes in vertebrates.EMBO J. 1: 1075
3. Dasgupta S., Datta U. and Mandal R. K. 1989 Organization and size class homogeneity of ribosomal RNA genes of catfishHeteropneustes fossilis.Indian J. Biochem. Biophys. 26: 1–4
4. Dasgupta S. and Mandal R. K. 1988 Cloning and characterization of ribosomal RNA genes of catfishHeteropneustes fossilis.Indian J. Biochem. Biophys. 25: 518–522
5. Fedoroff N. V. 1979 On spacers.Cell 16: 697–710