 He published a book about them, "Osman Hasan and the Tombstone Photographs of the Dönmes", in 2014.In 2012, Kosemen co-authored the book "All Yesterdays" with Australian paleoartist John Conway and British paleontologist Darren Naish.The book, which garnered wide attention and positive reviews, explores speculative ideas in paleoart, art reconstructing prehistoric animals.