@article{10_1017_S0017089511000322,
     author = {ASSEM, IBRAHIM and DUPONT, GR\'EGOIRE and SCHIFFLER, RALF and SMITH, DAVID},
     title = {FRIEZES, {STRINGS} {AND} {CLUSTER} {VARIABLES}},
     journal = {Glasgow mathematical journal},
     pages = {27--60},
     year = {2012},
     volume = {54},
     number = {1},
     doi = {10.1017/S0017089511000322},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089511000322/}
}