@article{MSC_2008_2008_1_a5,
     author = {Foschi, R. and  Spizzichino, Fabio},
     title = {Semigroups of {Semi-copulas} and {Evolution} of {Dependence} at {Increase} of {Age.}},
     journal = {Mathware & soft computing},
     pages = {95-111},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MSC_2008_2008_1_a5/}
}