@article {timecont,
	title = {Time continuity in cohesive finite element modeling},
	journal = {International J. Numer. Meth. Eng.},
	volume = {58},
	number = {5},
	year = {2003},
	pages = {679-701},
	author = {K. Papoulia and S. Vavasis and C.-H. Sam}
}