Stability of SSD portfolio efficiency - monthly versus yearly returns

KOPA, M. Stability of SSD portfolio efficiency - monthly versus yearly returns. In: BROŽOVÁ, Helena, ed. Proceedings of 27th International Conference Mathematical Methods in Economics 2009. Prague: Czech University of Life Sciences Prague, 2009, s. 184-187. ISBN 978-80-213-1963-9. Dostupné z: http://library.utia.cas.cz/separaty/2009/E/kopa-stability of ssd portfolio efficiency - monthly versus yearly returns.pdf