@article {IOPORT.06030317,
    author       = {Mongelli, Pietro},
    title        = {On the total positivity of restricted Stirling numbers.},
    year         = {2012},
    journal      = {European Journal of Combinatorics},
    volume       = {33},
    number       = {4},
    issn         = {0195-6698},
    pages        = {446-448},
    publisher    = {Elsevier Science (Academic Press), London},
    doi          = {10.1016/j.ejc.2011.11.011},
    abstract     = {Summary: This note shows that the matrix whose $(n,k)$ entry is the number of set partitions of $\{1,\ldots ,n\}$ into $k$ blocks with size at most $m$ is never totally positive for $m\geq 3$; thus answering a question posed in [{\it H. Han} and {\it S. Seo}, ``Combinatorial proofs of inverse relations and log-concavity for Bessel numbers", Eur. J. Comb. 29, No. 7, 1544-1554 (2008; Zbl 1178.05005)].},
    identifier   = {06030317},
}