This is the 9782nd most frequent Russian word.
эстлунда
"Эстлунда" is not a standard Russian word. It might be a misspelling or a proper name.
In this sentence, 'Эстлунда' is a proper noun, indicating the name of an author being discussed.
Я недавно прочитал книгу известного писателя Эстлунда.
I recently read a book by the famous author Estlund.
Here, 'Эстлунда' is used as a noun to name a person known for significant contributions.
Эстлунда называют выдающимся мыслителем современности.
Estlund is referred to as an outstanding thinker of modern times.
In this sentence, 'Эстлунда' is possessive, showing ownership of the style attributed to Estlund.