@article{article, title  = {{Sound wave travel times in plage areas: The effect of abnormal granulation}},

 url = {{}},

 year = {{2006}},

 month = {{7}},

 author = {{Petrovay K and Erdélyi R and Thompson MJ}},

 journal = {{European Space Agency Special Publication ESA SP}},

 issue = {{617}},

 note = {{Accessed on 2025/12/11}}}