From the book of Boss "Classical and modern methods in summability":

"The class of Hausdorff methods includes the Hölder, Cesaro and Euler methods. A large number of other matrix methods which play an essential role in summability are Hausdorff methods too."

I wonder if there is any well-known example of Hausdorff methods? For example, circle methods such as Meyer-Konig or Taylor is an Hausdorff method?