Femtosecond Time-resolved Spectroscopy for the Study of Photosystem I Reaction Centers at 77 K. G. Hastings, H. Makita, L. T. Shenje, S. Ullrich: Femtosecond Time-resolved Spectroscopy for the Study of Photosystem I Reaction Centers at 77 K. Frontiers in Science, Technology, Engineering and Mathematics, 2019, 3(2), 63-70. Type of News/Audience: Publications Research Areas: Atomic & Molecular Physics