The TVD scheme used by WAM is explained in the following papers.
@ARTICLE{Payri2004,
author = {Payri, F. and Galindo, J. and Serrano, J. R. and Arnau, F. J.},
title = {Analysis of numerical methods to solve one-dimensional fluid-dynamic
governing equations under impulsive flow in tapered ducts},
journal = {International Journal of Mechanical Science},
year = {2004},
volume = {46},
pages = {981--1004},
}
@ARTICLE{Gascon2001,
author = {Gasc'{o}n, Ll. and Corber'{a}n, J. M.},
title = {Construction of second-order TVD schemes for non-homogeneous hyperbolic
conservation law},
journal = {Journal of Computational Physics},
year = {2001},
volume = {172},
pages = {261--97},
file = {Corberan2001.pdf:Corberan2001.pdf:PDF}
}
@ARTICLE{Corberan1995,
author = {Corber'{a}n, J. M. and Gasc'{o}n, Ll.},
title = {TVD schemes for the calculation of flow in pipes of variable cross-section},
journal = {Mathematical and Computer Modelling},
year = {1995},
volume = {21},
pages = {85}
}