Author: Bisgaard, Torben Maack

Bisgaard, Torben Maack; Sakakibara, Nobuhisa: Stieltjes perfect semigroups are perfect. (English). Czechoslovak Mathematical Journal, vol. 55 (2005), issue 3, pp. 729-753
Bisgaard, Torben Maack: An example of a positive semidefinite double sequence which is not a moment sequence. (English). Czechoslovak Mathematical Journal, vol. 54 (2004), issue 2, pp. 273-277
Bisgaard, Torben Maack: On the Stieltjes moment problem on semigroups. (English). Czechoslovak Mathematical Journal, vol. 52 (2002), issue 1, pp. 155-196

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