Goltsev, V. Zaharieva, I., Chernev, P., Kouzmanova, M., Kalaji, H. M., Yordanov, I., Krasteva, V., Alexandrov, V., Stefanov, D., Allakhverdiev, S. I. and Strasser, R. J. 2012. Drought-induced modifications of photosynthetic electron transport in intact leaves: Analysis and use of neural networks as a tool for a rapid non-invasive estimation. B. B. A. – Bioenergetics 1817: 1490–1498.