1. Culture collections and preservation of bacteria;Lapage,1970
2. Preservation of Knallgas bacteria;Malik,1976
3. A freez-drying method for the preservation of phototrophic bacteria;Malik,1978
4. Bacterial culture collections: their importance to biotechnology and microbiology;Malik,1987
5. The role of culture collections in the stability and preservation of microorganisms;Malik,1987