This document featured prominently in a libel case, in Ireland, when De Rossa sued the "Sunday Independent" newspaper in 1992, which had published it, claiming that the signature on the document was not his. De Rossa won the suit and and was awarded 300,000 GBP plus costs.
Vladimir Bukovsky had this to say about this incident:
I am familiar with the case. And I even testified in the Irish court. As far as I remember, the authenticity of the document was not in question, but De Rossa simply denied he had signed it. Furthermore, the court has established that both Garland and De Rossa have visited Moscow later the same year. But when asked in court what did they do in Moscow, De Rossa said he does not remember. When asked directly, did he visit Central Committee's International Department, he again claimed he does not remember. Then the judge, being infuriated by these claims, actually got permission from the Russian government to come to the archives in Moscow, and to see the original of this document. He did this and came back to report that the document is authentic. Nevertheless, the jury decided in favour of De Rossa. I looked at them in the court and I understood why. They were all young people in their 20s who had no idea what it was like in 1986, what was the Cold War about etc., whereas De Rossa was a popular politician who introduced some social benefits while being a minister for social affairs in a Labour government. Ironically, I had more documents about that "Workers Party", in particular a report from the then KGB chief to Central Committee saying that Mr. Garland maintains a contact with the KGB station chief in Dublin (and asked for "special training" of some of his comrades to be arranged in 1989). But the lawyers for Irish Independent begged me not to submit this document to the court because, as they said, due to some peculiarities of Irish law it will make the case even worse for them.