1. Abeywardena V (1962). Studies on biennial bearing tendency in coconut. I. Measurement of bienniality in coconut. Ceylon Coconut Quarterly 13:112-128.
2. Abeywardena V (1972). An application of principal component analysis in enetics. Journal of Genetics 61:27-51.
3. Antonio VP, Cosme DC, Reinaldo DPF, Milton AB, Jackson S (2002). Influence of Genotype Stabilization on the Repeatability Estimates of Forage Traits in Elephant Grass (Pannisetum purpureum Schum). Lavras 26(4):762-767.
4. Aymbir FAF, Tocio S, Cosme DC, Ney SS, Romrio GF, Maria A, Scheilla MB (2004). Repeatability and number of harvests required for selection in robusta coffee. Crop Breeding and Applied Biotechnology 4:325-329.
5. Bastidas SP (1989). Sistema de melhoramento em palmaafricana em el mira-tumaco. In: CursoCorto. Nario Anais Nario: Prociandino pp. 19-47.