@misc{misc, title = {{Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes}}, url = {{}}, year = {{2009}}, month = {{9}}, author = {{Zharkov S and Shelyag S and Fedun V and Erd茅lyi R and Thompson MJ}}, note = {{Accessed on 2025/05/31}}}