Resumen de A simplified treatment of the restricted analysis of a slightly disproportionate factorial experiment
José M. Prieto, José María Caridad y Ocerín 
This paper considers a procedure to obtain effect estimators in the least squares analysis of a slightly disproportionate factorial design when a sample survey is made of the results of an extensive experiment. Explicit formulae have been found for the restricted estimators and their variances, when the constraints normally imposed upon a proportional model are used. In addition, an approximate analysis of the original model is used to perform that estimation, and an approximate analysis of variance table is proposed
