Köster, Helmut Joachim Department of Cell Physiology, Max Planck Institute for Medical Research, Max Planck Society;
http://www.cell.com/biophysj/pdf/S0006-3495(99)77063-3.pdf (Any fulltext)
http://dx.doi.org/10.1016/S0006-3495(99)77063-3 (Any fulltext)
Köster, H. J., Baur, D., Uhl, R., & Hell, S. W. (1999). Ca2+ fluorescence imaging with pico- and femtosecond two-photon excitation: signal and photodamage. Biophysical Journal, 77(4), 2226-2236. doi:10.1016/S0006-3495(99)77063-3.