How to find ISSN number of IEEE Sponsored (or IEEE related) Events? My University of Technology requires me to limit my research paper publications to certain venues, which have an associated ISSN number.  How do I find out the ISSN numbers for IEEE Sponsored events, such as in Croatia (Europe), when I can't find an ISSN number on their Web pages?  Here is the IEEE related conference URL: http://iwcmc.org/2015/?  Thanks so much!!!
You can look at this list https://www.ieee.org/documents/2005_present_list_of_titles.xls from IEEE of upcoming events, and events from 2005 to present with all corresponding publication numbers.

As a comment points out, many of the listings do not have ISSN numbers. However, you can look at line 10935 of the excel sheet and see your conference. 

IWCMC.  The IEEE conference number is 34432 and ISBN 978-1-4799-5345-5