@article{article8d863768, title = {Effects of n'O IND.3-', n'H IND.4+' and urea nutrition on endogenous levels of iaa and four cytokinins in two epiphytic bromeliads}, author = {Mercier, Helenice and Kerbauy, Gilberto Barbante and Sotta, B and Miginiac, E}, year = {1997}, journal = {Plant Cell and Environment} }