@article {842761,
	title = {Pattern formation and developmental mechanisms unresolved issues of pattern formation},
	journal = {Curr Opin Genet Dev},
	volume = {9},
	number = {4},
	year = {1999},
	month = {1999 Aug},
	pages = {387-9},
	issn = {1879-0380},
	author = {Perrimon, N and Stern, C}
}
