@article {12358,
	title = {Endomorphisms of semigroups of order-preserving partial transformations},
	journal = {Semigroup Forum (10.1007/s00233-018-9948-z)},
	volume = {99},
	year = {2019},
	pages = {333-344},
	abstract = {<p>In this paper we characterize the monoids of endomorphisms of the semigroups PO_n and POI_n of all order-preserving partial transformations and of all order-preserving partial permutations, respectively, of a finite n-chain. </p>
},
	url = {https://rdcu.be/YeoC},
	author = {Fernandes, V{\'\i}tor H. and Paulo G Santos}
}
