Royce 1970 of course: http://www.cs.umd.edu/class/spring2003/cmsc838p/Process/waterfall.pdf http://www.cs.umd.edu/class/spring2003/cmsc838p/Process/wate... wher

Royce 1970 of course: http://www.cs.umd.edu/class/spring2003/cmsc838p/Process/waterfall.pdf http://www.cs.umd.edu/class/spring2003/cmsc838p/Process/wate... wherein he did not introduce Waterfall, but for some reason the negative aspects of his article became the basis for Waterfall. The article for 1970 is surprisingly relevant although archaic in language. It's worth reading to the end. He wrote this describing leading teams in the 1960s do what I assume was actual "rocket" science.