@article{ citekey3372,
author = {K. Grützmann and S. Böcker and S. Schuster},
title = {Combinatorics of aliphatic amino acids},
journal = {Naturwissenschaften},
year = {2011},
volume = { 98},
pages = {79-86},
number = {1},
doi = { http://dx.doi.org/10.1007/s00114-010-0743-2}
}