J. Aczél, On Mean Values, Bulletin of the, pp.392-400, 1948.

G. Adilov and A. M. Rubinov, B-convex Sets and Functions, Numerical Functional Analysis and Optimization, pp.237-257, 2006.

G. Adilov and I. Yesilce, B ?1 -convex Sets and B ?1 -measurable Maps, Numerical Functional Analysis and Optimization, pp.131-141, 2012.
DOI : 10.1080/01630563.2011.618960

M. Avriel, r-convex functions, Mathematical Programming, pp.309-323, 1972.
DOI : 10.1007/BF01584551

M. Avriel, Nonlinear Programming: Analysis and Methods, 1976.

R. D. Banker, A. Charnes, and W. W. Cooper, Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis, Management Science, vol.30, issue.9, pp.1078-92, 1984.
DOI : 10.1287/mnsc.30.9.1078

R. D. Banker and A. Maindiratta, Piecewise Loglinear Estimation of Efficient Production Surfaces, Piecewise Loglinear Estimation of Efficient Production Surfaces, pp.126-135, 1986.
DOI : 10.1287/mnsc.32.1.126

R. D. Banker and R. C. Morey, Efficiency Analysis for Exogenously Fixed Inputs and Outputs, Operations Research, vol.34, issue.4, pp.513-521, 1986.
DOI : 10.1287/opre.34.4.513

A. Ben-tal, On generalized means and generalized convex functions, Journal of Optimization Theory and Applications, vol.11, issue.1, pp.1-13, 1977.
DOI : 10.1007/978-3-662-35199-4

J. Boussemart, W. Briec, N. Peypoch, and C. Tavéra, ??-Returns to scale and multi-output production technologies, European Journal of Operational Research, vol.197, issue.1, pp.332-339, 2009.
DOI : 10.1016/j.ejor.2008.05.028

. W. Briec, Some Remarks on an Idempotent and Non-Associative Convex Structure, Journal of Convex Analysis, vol.22, pp.259-289, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01416352

W. Briec and C. D. Horvath, A <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="double-struck">B</mml:mi></mml:math>-convex production model for evaluating performance of firms, Journal of Mathematical Analysis and Applications, vol.355, issue.1, pp.131-144, 2009.
DOI : 10.1016/j.jmaa.2009.01.048

W. Briec and Q. B. Liang, On some semilattice structures for production technologies, European Journal of Operational Research, vol.215, pp.740-749, 2011.
DOI : 10.1016/j.ejor.2011.06.012

A. Charnes, W. W. Cooper, and E. Rhodes, Measuring the efficiency of decision making units, European Journal of Operational Research, vol.2, issue.6, pp.429-444, 1978.
DOI : 10.1016/0377-2217(78)90138-8

A. Charnes, W. W. Cooper, L. Seiford, and J. Stutz, A Multiplicative Model for Efficiency Analysis, Socio-Economic Planning Science, pp.223-224, 1982.

G. Debreu, The Coefficient of Resource Utilization, Econometrica, vol.19, issue.3, pp.273-292, 1951.
DOI : 10.2307/1906814

D. Deprins, L. Simar, and H. Tulkens, Measuring labour efficiency in post offices The Performance of Public Enterprises, pp.243-267, 1984.
DOI : 10.1007/978-0-387-25534-7_16

R. Färe, S. Grosskopf, and D. Njinkeu, Note???On Piecewise Reference Technologies, On Piecewise Reference Technologies, pp.1507-1511, 1988.
DOI : 10.1287/mnsc.34.12.1507

M. J. Farrell, The Measurement of Productive Efficiency, Journal of the Royal Statistical Society. Series A (General), vol.120, issue.3, pp.253-281, 1957.
DOI : 10.2307/2343100

V. Podinovski, Selective convexity in DEA models, European Journal of Operational Research, vol.161, issue.2, pp.552-563, 2005.
DOI : 10.1016/j.ejor.2003.09.008

T. Post, Transconcave data envelopment analysis, European Journal of Operational Research, vol.132, issue.2, pp.374-389, 2001.
DOI : 10.1016/S0377-2217(00)00158-2

H. Tulkens, P. Vanden, and . Eeckaut, Non-frontier measures of efficiency, progress and regress for time series data, International Journal of Production Economics, vol.39, issue.1-2, pp.83-97, 2001.
DOI : 10.1016/0925-5273(95)00002-6