1. Title : Contribution to the Theory of Sampling Human Populations
Author : J. Neyman
Journal of the American Statistical Association
Vol. 33, No. 201 (Mar., 1938), pp. 101-116
(article consists of 16 pages)
Published by: American Statistical Association
Stable URL: http://www.jstor.org/stable/2279117

2. Title : Smooth Regression Analysis
Author : Geoffrey S. Watson
Sankhyā: The Indian Journal of Statistics, Series A
Vol. 26, No. 4 (Dec., 1964), pp. 359-372
(article consists of 14 pages)