@conference { TSH:2000b, title = {Higher Order Singularities in Piecewise Linear Vector Fields}, booktitle = {The Mathematics of Surfaces IX}, year = {2000}, pages = {99-113}, publisher = {Springer}, organization = {Springer}, address = {London, GB}, author = {Tricoche, X. and Gerik Scheuermann and Hans Hagen}, editor = {Cipolla, R. and Martin, R.} }