Could someone provide links to different swords used in shaolin kung fu?

I've got a book telling me they are referred to as "knives" and other folks calling them swords. I've been trying to find some info on the web but haven't had much luck.. also some names of forms done with those particular weapons would help...

As I know there are 3 different swords used in Kung Fu... a longsword type weapon, and 2 scimitar shaped ones of varying lengths. Those are the ones I know, though I don't know their names