@article{CML_2012__4_4_A2_0,
     author = {Henkel, Malte and Schott, Ren\'e and Stoimenov, Stoimen and Unterberger, J\'er\'emie},
     title = {The {Poincar\'e} algebra in the context of ageing systems: {Lie} structure, representations, {Appell} systems and coherent states},
     journal = {Confluentes Mathematici},
     publisher = {World Scientific Publishing Co Pte Ltd},
     volume = {4},
     number = {4},
     year = {2012},
     doi = {10.1142/S1793744212500065},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1142/S1793744212500065/}
}