by Wallace, Margaret R., Marchuk, Douglas A., Andersen, Lone B., Letcher, Roxanne, Odeh, Hana M., Saulino, Ann M., Fountain, Jane W., Brereton, Anne, Nicholson, Jane, Mitchell, Anna L., Brownstein, Bernard H., Collins, Francis S.
Published in Science (American Association for the Advancement of Science) (13.07.1990)

by Ballester, Roymarie, Marchuk, Douglas, Boguski, Mark, Saulino, Ann, Letcher, Roxanne, Wigler, Michael, Collins, Francis
Published in Cell (16.11.1990)

by Letcher, Roxanne, Simmen, Rosalia C. M., Bazer, Fuller W., Simmen, Frank A.
Published in Biology of reproduction (01.12.1989)

by Cogburn, Larry A., Wilson-Placentra, Sara, Letcher, L.Roxanne
Published in General and comparative endocrinology (01.12.1987)