@article{ADM_2005_4_a0,
     author = {Vadym Doroshenko},
     title = {Generators and relations for the semigroups of increasing functions on $\mathbb N$ and $\mathbb Z$},
     journal = {Algebra and discrete mathematics},
     pages = {1--15},
     publisher = {mathdoc},
     number = {4},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2005_4_a0/}
}