@article {17405,
	title = {The chemistry of control structures},
	journal = {ACM SIGPLAN Notices},
	volume = {9},
	year = {1974},
	month = {1974/12//},
	pages = {29 - 34},
	isbn = {0362-1340},
	doi = {10.1145/953246.953249},
	url = {http://doi.acm.org/10.1145/953246.953249},
	author = {Shneiderman, Ben}
}
