fibonacci code example from vhdl article uncredited in publication hi fwiw i just sent an email to library at dl ac uk with a subject of uncredited code example from wikipedia in one of your publications ladies and gentlemen i just t downloaded the document with a title of an overview of fpgas and fpga programming initial experiences at daresbury november version richard wain ian bush martyn guest miles deegan igor kozin and christine kitchen computational science and engineering department cclrc daresbury laboratory daresbury warrington cheshire wa ad uk id numbers in that file are issn and dl tr the fibonacci series example in vhdl in section on page is near identical to the code example on vhdl in the english wikipedia which was first written by in july as version the only change to the code in your document seems to be exchanging the vhdl architecture name from rcingham to fib the document in question does not acknowledge the author of that code example as required by the gnu free documentation license a quote from the license wikipedia uses grants free access to our content in the same sense as free software is licensed freely this principle is known as copyleft that is to say wikipedia content can be copied modified and redistributed so long as the new version grants the same freedoms to others and acknowledges the authors of the wikipedia article used a direct link back to the article satisfies our author credit requirement please update the document in order to comply with the requirements of the gnu free documentation license sincerely colin marquardt