Per Sort

 @inproceedings{preface-woa2021,
    author = {Calegari, Roberta and Ciatto, Giovanni and Denti, Enrico and Omicini, Andrea and Sartor, Giovanni},
    booktitle = {WOA 2021 -- 22nd Workshop ``From Objects to Agents''},
    editor = {Calegari, Roberta and Ciatto, Giovanni and Denti, Enrico and Omicini, Andrea and Sartor, Giovanni},
    iris = {11585/834358},
    issn = {1613-0073},
    location = {Bologna, Italy},
    month = oct,
    note = {22nd Workshop ``From Objects to Agents'' (WOA 2021), Bologna, Italy, 1--3~} # sep # {~2021. Proceedings},
    numpages = 2,
    pages = {i--ii},
    publisher = {Sun SITE Central Europe, RWTH Aachen University},
    scopus = {2-s2.0-85116895007},
    series = {CEUR Workshop Proceedings},
    subseries = {AI*IA Series},
    title = {Preface},
    url = {http://ceur-ws.org/Vol-2963/xpreface.pdf},
    volume = 2963,
    year = 2021
} 

 @inproceedings{preface-woa2020,
    address = {Aachen, Germany},
    author = {Calegari, Roberta and Ciatto, Giovanni and Denti, Enrico and Omicini, Andrea and Sartor, Giovanni},
    booktitle = {WOA 2020 -- 21th Workshop ``From Objects to Agents''},
    editor = {Calegari, Roberta and Ciatto, Giovanni and Denti, Enrico and Omicini, Andrea and Sartor, Giovanni},
    iris = {11585/781522},
    location = {Bologna, Italy},
    month = oct,
    note = {21st Workshop ``From Objects to Agents'' (WOA 2020), Bologna, Italy, 14--16~} # sep # {~2020. Proceedings},
    numpages = 2,
    pages = {iii--iv},
    publisher = {Sun SITE Central Europe, RWTH Aachen University},
    scopus = {2-s2.0-85095596630},
    series = {CEUR Workshop Proceedings},
    subseries = {AI*IA Series},
    title = {Preface},
    url = {http://ceur-ws.org/Vol-2706/xpreface.pdf},
    urlpdf = {http://ceur-ws.org/Vol-2706/xpreface.pdf},
    volume = 2706,
    year = 2020
}