@InProceedings{KP17,
author={Sébastien  Konieczny and Ramón  Pino Pérez},
title= {On Iterated Contraction: Syntactic Characterization, Representation Theorem and Limitations of the Levi Identity},
booktitle = {Eleventh International Conference on Scalable Uncertainty Management (SUM'17)} ,
pages = {348-362},
year= {2017}
}