The links below to references in the literature which include analytical aspects of philately. These may be very important because the name of books and papers are often not indicative of details of their contents.
|Mustacich, Robert||Freak or Fake? A New Fingerprinting Method for Distinguishing between Original and Fraudulent Extra Perforation of 19th Century Revenue Stamps||The American Revenuer, 2014 67(1). pp. 2-19|
|Mustacich, Robert||Fake Perforations on 19th Century U.S. Revenue Stamps: A Stroke of Luck||The American Revenuer, 2015 68(4). pp. 90-96|
|Mustacich, Robert||Measurements of Stamp Separation Features by Digital Image Analysis||IAP II pp 73-85|
|Nixon, J. Edward (Ted) and Garfield Portch||Impact of Technical Analyses on Greene Foundation Expertizing||IAP III |