@inproceedings{LISP-1963-Russell,
	author        = "Steve Russell",
	booktitle     = "{First International Lisp Conference}",
	pages         = "15",
	title         = "{Debugging aids}",
	url           = "ftp://publications.ai.mit.edu/ai-publications/pdf/AIM-006.pdf",
	year          = 1963,
}