When were the first papers of the authors of 'Algorithm of efficient computation of generalised discrete Hartley transform based on cyclic convolutions' published?
Mention the year in which the first papers of the authors of 'Algorithm of efficient computation of generalised discrete Hartley transform based on cyclic convolutions' were published.
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/journals/iet-spr/Protsko14> <https://dblp.org/rdf/schema#authoredBy> ?answer . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer . ?x <https://dblp.org/rdf/schema#yearOfPublication> ?y }
<https://dblp.org/rec/journals/iet-spr/Protsko14>