Remote sensing of heterogeneity in photosynthetic efficiency, electron transport and dissipation of excess light in <i>Populus deltoides</i> stands under ambient and elevated CO<sub>2</sub> concentrations, and in a tropical forest canopy, using a new laser‐induced fluorescence transient deviceGennady Ananyev, Barry Osmond, Dennis V. Klimov et al.|Global Change Biology|2005Cited by 50