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Lisitsa, Alexei and Vernitski, Alexei (2024) Semigroups, keis and groups induced by knot diagrams: an experimental investigation with automated reasoning. Semigroup Forum, 109 (1). pp. 186-193. DOI https://doi.org/10.1007/s00233-024-10433-x

Higgins, Peter M (2024) Finite regular semigroups with permutations that map elements to inverses. Semigroup Forum, 109 (1). pp. 141-147. DOI https://doi.org/10.1007/s00233-024-10430-0

Higgins, Peter and Jackson, Marcel (2023) Equationally defined classes of semigroups. Semigroup Forum, 107 (2). pp. 459-477. DOI https://doi.org/10.1007/s00233-023-10397-4

Higgins, Peter and Vernitski, Alexei (2022) Orientation-preserving and orientation-reversing mappings: a new description. Semigroup Forum, 104 (2). pp. 509-514. DOI https://doi.org/10.1007/s00233-022-10256-8

East, James and Higgins, Peter M (2020) Green's relations and stability for subsemigroups. Semigroup Forum, 101 (1). pp. 77-86. DOI https://doi.org/10.1007/s00233-019-10039-8

Alam, Noor and Higgins, Peter M and Khan, Noor Mohammad (2020) Epimorphisms, dominions and H-commutative semigroups. Semigroup Forum, 100 (2). pp. 349-363. DOI https://doi.org/10.1007/s00233-019-10050-z

Higgins, Peter M (2019) Involution matchings, the semigroup of orientation-preserving and orientation-reversing mappings, and inverse covers of the full transformation semigroup. Semigroup Forum, 98 (3). pp. 669-689. DOI https://doi.org/10.1007/s00233-019-10018-z

Vernitski, Alexei and Tunsi, Laila and Ponchel, Colette and Lisitsa, Alexei (2018) Dihedral semigroups, their defining relations and an application to describing knot semigroups of rational links. Semigroup Forum, 97 (1). pp. 75-86. DOI https://doi.org/10.1007/s00233-018-9918-5

East, James and Vernitski, Alexei (2018) Ranks of ideals in inverse semigroups of difunctional binary relations. Semigroup Forum, 96 (1). pp. 21-30. DOI https://doi.org/10.1007/s00233-017-9846-9

Vernitski, Alexei (2017) Describing semigroups with defining relations of the form xy=yz xy and yx=zy and connections with knot theory. Semigroup Forum, 95 (1). pp. 66-82. DOI https://doi.org/10.1007/s00233-016-9808-7

Higgins, Peter M (2017) Orthodox semigroups and permutation matchings. Semigroup Forum, 94 (1). pp. 167-175. DOI https://doi.org/10.1007/s00233-016-9831-8

Juhász, Zsófia and Vernitski, Alexei (2016) Semigroups with operation-compatible Green’s quasiorders. Semigroup Forum, 93 (2). pp. 387-402. DOI https://doi.org/10.1007/s00233-016-9792-y

Higgins, Peter M (2014) Permutations of a semigroup that map to inverses. Semigroup Forum, 89 (1). pp. 169-182. DOI https://doi.org/10.1007/s00233-013-9535-2

Higgins, Peter M (2012) The product of the idempotents and an $\mathcal{H}$ -class of the finite full transformation semigroup. Semigroup Forum, 84 (2). pp. 203-215. DOI https://doi.org/10.1007/s00233-012-9373-7

Juhász, Zsófia and Vernitski, Alexei (2011) Using filters to describe congruences and band congruences of semigroups. Semigroup Forum, 83 (2). pp. 320-334. DOI https://doi.org/10.1007/s00233-011-9330-x

Vernitski, Alexei (2009) Inverse subsemigroups and classes of finite aperiodic semigroups. Semigroup Forum, 78 (3). pp. 486-497. DOI https://doi.org/10.1007/s00233-008-9121-1