It maintains the List of Title Word Abbreviations (LTWA), which contains standard abbreviations for words commonly found in serial titles.
[3] A major use of ISO 4 is to abbreviate the names of scientific journals using the LTWA.
For instance, under ISO 4 standards, the Journal of Biological Chemistry is cited as J. Biol.
The standard notes that "Full stops shall only be used to indicate an abbreviation.
Full stops may be omitted from abbreviated words in applications that require limited use of punctuation" (section 4.6).