Specific Rules #2 for Title of Volume (required) for Individual Volumes With a Separate Title but Without Separate Authors/Editors Vancouver Style: Titles containing a Greek letter, chemical formula, or another special character

Capitalize the first word of the title of a volume unless the title begins with a Greek letter, chemical formula, or another special character that might lose its meaning if capitalized.

Vol. 10, n-alkenes.

Vol. 3, de Crecchio syndrome.

If a title contains a Greek letter or some other symbol that cannot be reproduced with the type fonts available, substitute the name for the symbol. For example, Ω becomes omega.

Vol. 3, Seeds and γ-radiation.

may become:

Vol. 3, Seeds and gamma-radiation.

If a title contains superscripts or subscripts than cannot be reproduced with the type fonts available, place the superscript or subscript in parentheses.

Vol. 4, Transport of NH3.

may become:

Vol. 4, Transport of NH(3).

Según:

Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 2: Books

Related:

General Rules for Title of Volume (required) for Individual Volumes With a Separate Title but Without Separate Authors/Editors

Specific Rules #1 for Title of Volume (required) for Individual Volumes With a Separate Title but Without Separate Authors/Editors: Non-English titles for volumes

Specific Rules #2 for Title of Volume (required) for Individual Volumes With a Separate Title but Without Separate Authors/Editors: Titles containing a Greek letter, chemical formula, or another special character

Examples for Title of Volume (required) for Individual Volumes With a Separate Title but Without Separate Authors/Editors