Here is the link to my book from 2021 based on my PhD thesis about the Iranian language attitudes towards the Tajiki language at the Humboldt University of Berlin, Germany:
https://link.springer.com/book/10.1007/978-3-662-64098-2
For a complete list of my publications, please visit:
https://www.mehrdadsaeedi.de/index.php/publications/
And here is the link to my blog with weekly posts in German about the Persian language and literature: