What is every reference for type and usage of Germanium small-signal RF transistor?
CREATE TABLE table_30011_2 (reference VARCHAR, type_and_usage VARCHAR)
SELECT reference FROM table_30011_2 WHERE type_and_usage = "Germanium small-signal RF transistor"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_30011_2 (reference VARCHAR, type_and_usage VARCHAR) Question: What is every reference for type and usage of Germanium small-signal RF transistor? [/INST] SELECT reference FROM table_30011_2 WHERE type_and_usage = "Germanium small-signal RF transistor" </s>