One source is e g Kortfattad svensk spr khistoria by G sta Bergman Bengt pamps Svenska dialekter would work fine as well If you want to I can even contact my dear friend professor Staffan fridell at Department for Nordic langauges Uppsala university I have already employed his knowledge in my correct claim that Old Swedish had diphthongs contrary to the original incorrect claim of the article on the Swedish language Since I know you have a severe tendency of interpreting sourcing in your own way I would like you to quote and scan your graphical data in NE and Svenska spr ket under sjuhundra r Please Jens Persson