Rebecca Smith, Vincent Vatter. The enumeration of permutations sortable by pop stacks in parallel. Inf. Process. Lett., 109(12):626-629, 2009. [doi]
@article{SmithV09,
title = {The enumeration of permutations sortable by pop stacks in parallel},
author = {Rebecca Smith and Vincent Vatter},
year = {2009},
doi = {10.1016/j.ipl.2009.02.014},
url = {http://dx.doi.org/10.1016/j.ipl.2009.02.014},
researchr = {https://researchr.org/publication/SmithV09},
cites = {0},
citedby = {0},
journal = {Inf. Process. Lett.},
volume = {109},
number = {12},
pages = {626-629},
}