1. Papaw season can be extended artificially;Allan;Farming S. Afr.,1960
2. Pollen studies in Carica papaya. I. Formation, development, morphology and production of pollen;Allan;S.d Afr. J. Agric. Sci.,1963
3. Pollen studies in Carica papaya. II. Germination and storage of pollen;Allan;S. Afr. J. Agric. Sci.,1963
4. Papaws grown from cuttings;Allan;Farming S. Afr.,1964
5. Papaw research at Pietermaritzburg. I. Production from seedlings;Allan;Farming S. Afr.,1967