Harper, J., Armstead, I., Thomas, A., James, C., Gasior, D., Bisaga, M., . . . King, J. (2011). Alien introgression in the grasses Lolium perenne (perennial ryegrass) and Festuca pratensis (meadow fescue): The development of seven monosomic substitution lines and their molecular and cytological characterization. Oxford University Press.

Harper, John, Ian Armstead, Ann Thomas, Caron James, Dagmara Gasior, Maciej Bisaga, Luned Roberts, Ian King, e Julie King. Alien Introgression in the Grasses Lolium Perenne (perennial Ryegrass) and Festuca Pratensis (meadow Fescue): The Development of Seven Monosomic Substitution Lines and Their Molecular and Cytological Characterization. Oxford University Press, 2011.

Harper, John, et al. Alien Introgression in the Grasses Lolium Perenne (perennial Ryegrass) and Festuca Pratensis (meadow Fescue): The Development of Seven Monosomic Substitution Lines and Their Molecular and Cytological Characterization. Oxford University Press, 2011.