P A LAKSHMI PRASANNA; L V SUBBA RAO; A S HARI PRASAD; AMTUL WARIS; S ARUN KUMAR. Essentially derived variety concept in plant variety rights protection system: underlying economic theories, and issues in implementation. Agricultural Economics Research Review, India, v. 36, n. 1, p. 77–86, 2023. Disponível em: https://epubs.icar.org.in/index.php/AERR/article/view/143786. Acesso em: 29 oct. 2025.