3Jeffiey W. Smith, James P. Selway Ⅲ, D.Timothy McCirmick, The Nasdaq Stock Market: Historical Background and Current Operation, NASDAQ Working Paper, 1, 1998,p.20.
4NASDAQ Rule,4310(C).
5Jeffiey W. Smith, James P. Selway Ⅲ, D.Timothy McCirmick, The Nasdaq Stock Market: Historical Background and Current Operation, NASDAQ Working Paper, 1, 1998,p.20.