A. I. Forrester, A. Sobester, and A. J. Keane, Multi-fidelity optimization via surrogate modelling, Proc. R. Soc. A 463, pp.3251-3269, 2007.
DOI : 10.1098/rspa.2007.1900
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.332.1319

M. C. Kennedy and A. O-'hagan, Predicting the output from a complex computer code when fast approximations are available, Biometrika, vol.87, issue.1, pp.1-13, 2000.
DOI : 10.1093/biomet/87.1.1

L. Gratiet and L. , Bayesian analysis of hierarchical multi-fidelity codes, Arxiv preprint arXiv, pp.1112-5389, 2011.

T. J. Santner, B. J. Williams, and W. I. Notz, The Design and Analysis of Computer Experiments, 2003.
DOI : 10.1007/978-1-4757-3799-8

Z. Qian, J. Wu, and C. F. , Bayesian Hierarchical Modeling for Integrating Low-Accuracy and High-Accuracy Experiments, Technometrics, vol.50, issue.2, pp.192-204, 2008.
DOI : 10.1198/004017008000000082