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	Issue Date	Title	Author(s)	Type	Access
1	2017	On some categorical-algebraic conditions in S-protomodular categories	Martins-Ferreira, Nelson ; Montoli, Andrea ; Sobral, Manuela	article	openAccess
2	2016	Baer sums of special Schreier extensions of monoids	Martins-Ferreira, Nelson ; Montoli, Andrea ; Sobral, Manuela	article	embargoedAccess
3	2013	Semidirect products and crossed modules in monoids with operations	Martins-Ferreira, Nelson ; Montoli, Andrea ; Sobral, Manuela	article	embargoedAccess
4	2014	Semidirect Products and Split Short Five Lemma in Normal Categories	Martins-Ferreira, Nelson ; Montoli, Andrea ; Sobral, Manuela	article	embargoedAccess
5	2014	Schreier split epimorphisms between monoids	Bourn, Dominique ; Martins-Ferreira, Nelson ; Montoli, Andrea ; Sobral, Manuela	article	embargoedAccess
6	Oct-2019	On the categorical behaviour of preordered groups	Clementino, Maria Manuel ; Martins-Ferreira, Nelson ; Montoli, Andrea	article	embargoedAccess
7	2018	The Nine Lemma and the push forward construction for special Schreier extensions of monoids with operations	Martins-Ferreira, Nelson ; Montoli, Andrea ; Sobral, Manuela	article	embargoedAccess
8	2020	On the classification of Schreier extensions of monoids with non-abelian kernel	Martins-Ferreira, Nelson ; Montoli, Andrea ; Patchkoria, Alex; Sobral, Manuela	article	embargoedAccess