Solar and Stellar FlaresThis volume is a collection of research articles on the subject of solar flares and flares on other cool stars, which are currently extensively studied using new ground and space based instruments, together with highly sophisticated numerical simulations. The collection memorializes the work of a pioneer in the study of solar physics, Professor Zdenek vestka (1925 Prague 2013 Bunschoten), a leading expert in the field of solar flares and the co