Frequency drifts of 3-min oscillations in microwave and EUV emission above sunspotsR. Sych, T. V. Zaqarashvili, V. M. Nakariakov, S. A. Anfinogentov, K. Shibasaki and Y. YanA&A, 539 (2012) A23DOI: https://doi.org/10.1051/0004-6361/201118271
