Table schema:
CREATE TABLE table_23835213_2 (undisclosed VARCHAR, wycombe_wanderers VARCHAR)

Question: What is the undisclosed when Aldertown is Aldershot Town and Wycombe Wanderers is Oxford United?
SQL: SELECT undisclosed FROM table_23835213_2 WHERE "aldershot_town" = "aldershot_town" AND wycombe_wanderers = "Oxford United"