@article{GPR96AU, author = {R. Giacobazzi and C. Palamidessi and F. Ranzato}, title={Weak Relative Pseudo-Complements of Closure Operators}, journal = {Algebra Universalis}, year = {1996}, volume = {36}, number = {3}, pages = {405-412}, Note = {Also available as Technical Report LIX/95/04, 1995 LIX, Ecole Polytechnique, 91128 Palaiseau Cedex, France.}}