@article{10_37236_2034,
     author = {Dennis E. Davenport and Louis W. Shapiro and Leon C. Woodson},
     title = {The double {Riordan} group},
     journal = {The electronic journal of combinatorics},
     year = {2011},
     volume = {18},
     number = {2},
     doi = {10.37236/2034},
     zbl = {1243.05009},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2034/}
}