CREATE TABLE table_12266757_1 (womens_singles VARCHAR, mens_doubles VARCHAR)

Who was the womens singles winnerwhen the mens doubles were stefan karlsson claes nordin , bk aura gbk?
SELECT womens_singles FROM table_12266757_1 WHERE mens_doubles = "Stefan Karlsson Claes Nordin , BK Aura GBK"
SELECT "womens_singles" FROM "table_12266757_1" WHERE "Stefan Karlsson Claes Nordin , BK Aura GBK" = "mens_doubles"