1. Rapid nutritional status evaluation during drought conditions - Republic of Niger.;Centers for Disease Control;Morbidity and Mortality Weekly Report,1986b
2. Cochran , W.G. 1977 Sampling Techniques, 3rd ed. John Wiley & Sons, New York
3. de Ville de Goyet , C. Seaman , J. Geijer , U. 1978 The Management of Nutritional Emergencies in Large Populations. The World Health Organization, Geneva
4. Interpretation of Z-score anthropometric indicators derived from the international growth reference;Dibley;American journal of Clinical Nutrition,1987