Swedish late 20th century-early 21st century children's and youth writers
Anders Jacobsson (born 1963) and Sören Olsson (born 1964) are two Swedish-born cousins who are writers of children's literature and young adult fiction. They are best known for their books about Sune and Bert, but also Tuva-Lisa and Emanuel. They have also written the scripts of several television series. Their inspiration comes from their own youth, and talking to young adults (when visiting schools) and their own imagination. Sören Olsson has illustrated the Sune books and the first Bert book, while the other Bert books, in the old Bert book series, were illustrated by Sonja Härdin.
https://en.wikipedia.org/wiki/Anders_Jacobsson_and_S%C3%B6ren_Olsson