To find books and journals about Swedish law, search in MNCAT Discovery using the following words as subject-headings: law sweden. Below are some examples.
Additionally, keep in mind that many American scholars write about Swedish law in American law journals, which are easily retrieved on Westlaw and Lexis.
Constitutional Law in Sweden by 
Iel Labour Law in Sweden by 
International Criminal Law from a Swedish Perspective by 
Labour Law, Fundamental Rights and Social Europe by