@article{10_1090_S0894_0347_01_00378_2,
     author = {Bousch, Thierry and Mairesse, Jean},
     title = {Asymptotic height optimization for topical {IFS,} {Tetris} heaps, and the finiteness conjecture},
     journal = {Journal of the American Mathematical Society},
     pages = {77--111},
     year = {2002},
     volume = {15},
     number = {1},
     doi = {10.1090/S0894-0347-01-00378-2},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-01-00378-2/}
}