@article{10_4064_am35_2_1,
     author = {Athanasios A. Pantelous and Alexandros A. Zimbidis},
     title = {Dynamic reforming of a quasi pay-as-you-go
 social security system within a discrete
stochastic multidimensional framework using
 optimal control methods},
     journal = {Applicationes Mathematicae},
     pages = {121--144},
     publisher = {mathdoc},
     volume = {35},
     number = {2},
     year = {2008},
     doi = {10.4064/am35-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am35-2-1/}
}