Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE publication (Publication_Date VARCHAR, Price VARCHAR)

### Question ###
List the publication dates of publications with 3 lowest prices.

### Accurate SQL ###

SELECT Publication_Date FROM publication ORDER BY Price LIMIT 3