http://en.wikipedia.org/wiki/Wikipedia:Deletion_review
Alternatively, if you wish to remake the page and improve it, there's nothing stopping you from re-creating it with new sources and information added[1]. The "Be Bold" guideline exists to encourage people to do things like that if you think you can improve it.
[1] Not entirely true, controversial pages that get recreated and deleted back and forth can be blocked from being recreated. At least in the case of Nemerle, it appears that that has yet to happen.
http://en.wikipedia.org/wiki/Wikipedia:Undeletion (for articles which were deleted without contest)
http://en.wikipedia.org/wiki/Wikipedia:Deletion_review (for contested deletes)
In fi.wikipedia (I am an arbcom member there) both delete and undelete are decided by a 2/3 majority vote.