Per Year

 @book {CalEletIII,
   author       = {Denti, Enrico and Natali, Antonio},
   title        = {Calcolatori Elettronici III: una introduzione alla programmazione orientata agli oggetti}, 
   year         = 1995,
   publisher    = {Pitagora Editrice},
   series       = {Consorzio Nettuno},
   address      = {Bologna, Italy},
   isbn         = {88-371-0771-4},
   note         = {Teaching material}} 

 @incollection{lprobot-scsai95,
    author = {Denti, Enrico and Natali, Antonio and Omicini, Andrea and Zanichelli, Francesco},
    booktitle = {Logic Programming: Formal Methods and Practical Applications},
    chapter = 12,
    dblp = {books/el/beierleP95/DentiNOZ95},
    editor = {Beierle, Christoph and Plümer, Lutz},
    isbn = {978-0-444-82092-1},
    isbn10 = {0-444-82092-2},
    pages = {343--379},
    publisher = {Elsevier},
    scopus = {2-s2.0-85023302187},
    series = {Studies in Computer Science and Artificial Intelligence},
    title = {Robot Control Systems as Contextual Logic Programs},
    volume = 11,
    year = 1995
}