R.J.R. Back and Heikki Mannila. A semantic approach to program modularity. Information and Control, 60(1-3):138–167, March 1984.
Suggested BibTeX entry:
@article{bm4, author = {R.J.R. Back and Heikki Mannila}, journal = {Information and Control}, month = {March}, number = {1-3}, pages = {138-167}, title = {A semantic approach to program modularity}, volume = {60}, year = {1984},
}