Publisher Item Identifier

The Publisher Item Identifier (PII) is a unique identifier used by a number of scientific journal publishers to identify documents.[1] It uses the pre-existing ISSN or ISBN of the publication in question, and adds a character for source publication type, an item number, and a check digit.

The system was adopted in 1996 by the American Chemical Society, the American Institute of Physics, the American Physical Society, Elsevier Science, and the IEEE.


A PII (pii) is a 17-character string, consisting of:

  • one character to indicate source publication type: "S" = serial with ISSN, "B" = book with ISBN
  • ISSN (8 digits) or ISBN (10 characters) of the serial or book to which the publication item is primarily assigned
  • in the case of serials an additional two digit number to pad the difference between the 8-digit ISSN and an ISBN (suggested are the last two digits of calendar year of the date of assignment, which is not necessarily identical to the cover date)
  • a 5-digit number assigned by the publisher that is unique to the publication item within the serial or book
  • a check digit (0-9 or X)

When a PII is printed (as opposed to stored in a database), the 17-character string may be extended with punctuation characters to make it more readable to humans, as in Sxxxx-xxxx(yy)iiiii-d or Bx-xxx-xxxxx-x/iiiii-d.


  • Buscemi, Lara; Ramonet, David; Klingberg, Franco; Formey, Aurélie; Smith-Clerc, Josiane; Meister, Jean-Jacques; Hinz, Boris (2011). "The Single-Molecule Mechanics of the Latent TGF-?1 Complex". Current Biology. 21 (24): 2046-54. doi:10.1016/j.cub.2011.11.037. PMID 22169532. PII S0960-9822(11)01319-4.

See also


  1. ^ Publisher Item Identifier as a means of document identification, Elsevier web site, last update 9 April 1998, accessed October 2003

External links

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



Connect with defaultLogic
What We've Done
Led Digital Marketing Efforts of Top 500 e-Retailers.
Worked with Top Brands at Leading Agencies.
Successfully Managed Over $50 million in Digital Ad Spend.
Developed Strategies and Processes that Enabled Brands to Grow During an Economic Downturn.
Taught Advanced Internet Marketing Strategies at the graduate level.

Manage research, learning and skills at Create an account using LinkedIn to manage and organize your omni-channel knowledge. is like a shopping cart for information -- helping you to save, discuss and share.

  Contact Us