CREATE TABLE table_12266757_1 (womens_singles VARCHAR(255), mens_doubles VARCHAR(255))
Who was the womens singles winnerwhen the mens doubles were  stefan karlsson claes nordin , bk aura gbk?
    
SQL: SELECT womens_singles FROM table_12266757_1 WHERE mens_doubles = "Stefan Karlsson Claes Nordin , BK Aura GBK"