Huybrechts P, T Payne, and the EISMINT Intercomparison Group (1996) The EISMINT benchmarks for testing ice-sheet models. Annals of Glaciology, 23 1-14 
Pattyn, F (2003) A new three-dimensional higher-order thermomechanical ice sheet model: Basic sensitivity, ice stream development, and ice flow across subglacial lakes. J. Geophys. Res., 108, B8, 2382, doi:10.1029/2002JB002329.
Payne AJ, and DJ Baldwin (2000) Analysis of ice-flow instabilities identified in the EISMINT intercomparison exercise. Ann. Glaciol., 30, 204-210 doi:10.3189/172756400781820534
Payne AJ, P Huybrechts, A Abe-Ouchi, R Calov, JL Fastook, R Greve, SJ Marshall, et al. (2000) Results from the EISMINT model intercomparison: the effects of thermomechanical coupling. Journal of Glaciology, 46(153), 227-238
Pattyn. A new three-dimensional higher-order thermomechanical ice sheet model: Basic sensitivity, ice stream …. J. Geophys. Res (2003) pdf
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Oliveira S and DE Stewart (2006) Writing Scientific Software: A Guide to Good Style, Cambridge: Cambridge University Press 
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References on adjoint methods and automatic differentiation
Griewank, A. and A. Walther, 2008: Evaluating Derivatives. Principles and Techniques of Algorithmic Differentiation (2nd ed.). SIAM Frontiers in Applied Mathematics, Vol. 19, Philadelphia, 2008.
MacAyeal, D.R., 1993: A tutorial on the use of control methods in ice-sheet modeling, J. Glaciol. 39(131), pp. 91-98.
MacAyeal, D.R. and V. Barcilon, 1998: Finding Connections Between Data and Theory: Applications in Geophysical Sciences. University of Chicago, Chicago, IL pdf
Wunsch, C., 2006: Discrete Inverse and State Estimation Problems: With Geophysical Fluid Applications. Cambridge University Press.