共 50 条
- [1] HOW MANY CATEGORIES FOR RESPONDENT CLASSIFICATION JOURNAL OF THE MARKET RESEARCH SOCIETY, 1981, 23 (04): : 220 - 238
- [2] HOW MANY CATEGORIES FOR RESPONDENT CLASSIFICATION JOURNAL OF THE MARKET RESEARCH SOCIETY, 1982, 24 (04): : 345 - 346
- [3] Classification of the Severity of Acute Pancreatitis: How Many Categories Make Sense? AMERICAN JOURNAL OF GASTROENTEROLOGY, 2010, 105 (01): : 74 - 76