Brown, P. J. (1993) Measurement, regression and calibration. Clarendon Press, Oxford.
Butler, N. A., Denham, M. C. (2000) The peculiar shrinkage properties of partial least squares regression. Journal of the Royal Statistical Society B 62: 585–593.
Causeur, D. J. (2005) Optimal sampling from concomitant variables for regression problems. Journal of Statistical Planning and Inference 128: 289–301.
Causeur, D. J., Dhorne, T. J. (1998) Finite sample properties of a multivariate extension of double regression. Biometrics 54: 1591–1601.
Causeur, D., Daumas, G., Dhorne, T., Engel, B., Font i Furnols, M., Højsgaard, S. (2006) Statistical handbook for assessing pig classification methods (In press).
Coniffe, D. (1985) Estimating regression equations with common explanatory variables but unequal numbers of observations. Journal of Econometrics 27: 179–196.
Engel, B. (1991) Statistical analysis of the Dutch dissection data concerning harmonisation of methods for grading pig carcasses in the community. Animal Sciences Group, Wageningen UR, Lelystad, The Netherlands.
Engel, B., Walstra, P. (1991a) Increasing precision or reducing expense in regression experiments by using information from a concomitant variable. Biometrics 47: 13–20.
Engel, B., Walstra, P. (1991b) A simple method to increase precision or reduce expense in regression experiments to predict the proportion of lean meat of carcasses. Animal Production 53: 353–359.
Engel, B., Walstra, P. (1993b) Accounting for subpopulations in prediction of the proportion of lean meat of pig carcasses. Animal Production 57: 147–152.
Engel, B., Buist, W. G., Walstra, P., Olsen, E., Daumas, G. (2003) Accuracy of prediction of percentage lean meat and authorization of carcass measurement instruments: adverse effects of incorrect sampling of carcasses in pig classification. Animal Science 76: 199–209.
EUPIGCLASS. 2000. Standardisation of pig carcasses classification in the EU through improved statistical procedures and new technological developments. Program funded under the Growth Programme. www.cordis.lu/en/home.html.
European Community. 1985. EC regulation no. 2967/85, laying down detailed rules for the application of the community scale for grading pig carcasses.
European Community. 1994. EC regulation no. 3127/94, amending regulation (EC) no. 2967/85, laying down detailed rules for the application of the community scale for grading pig carcasses.
Fearn, T. (1983) A misuse of ridge regression in the calibration of a near infrared reflectance instrument. Applied Statistics 32: 73–79.
Font i Furnols, M., Engel, B., Gispert, M. (2004) Validation of the Spanish equation to predict the lean meat percentage of pig carcasses with the Fat-O-Meater. Spanish Journal of Agricultural Research 2: 545–549.
GenStat Committee (2000) The guide to GenStat. (ed. Payne, R.), VSN, International Ltd, Oxford.
Gusnanto, A., Pawitan, Y., Huang, J., Lane, B. (2003) Variable selection in random calibration of near-infrared instruments: ridge regression and partial least squares regression settings. Journal of Chemometrics 17: 174–185.
Helland, I. S. (1988) On the structure of partial least squares regression. Communications in Statistics and Simulation 17: 581–607.
Martens, H., Naes, T. (1989) Multivariate calibration, John Wiley, Chichester.
Montgomery, D. G., Peck, E. (1992) Introduction to linear regression analysis, Second Edition, John Wiley, New York.
Osten, D. W. (1988) Selection of optimal regression models via cross-valiadation. Journal of Chemometrics 2: 79–92.
Statistical Analysis Systems Institute (1994) User's guide version 6, Fourth Edition, SAS Institute Inc., Cary, NC.
Stone, M., Brooks, R. J. (1990) Continuum regression: cross validated sequentially constructed prediction embracing ordinary least squares, partial least squares and principal components regression (with discussion). Journal of the Royal Statistical Society B 52: 237–269.
Walstra, P. 1986. Assessment of the regression formula for estimation of the lean meat percentage by HGP-measurements in the Netherlands. EC working paper, Brussels, VI/4849/86.
Walstra, P., Merkus, G. S., Procedure for assessment of the lean meat percentage as a consequence of the new EC reference dissection method in pig carcass classification. Animal Sciences Group, Wageningen UR, Lelystad, The Netherlands.