How to change some items in bibliography

Question

I'm using natbib package and jtbnew bibliography style. I would like to ask you some questions.

1. How can I change output and instead of abbreviation ed. get edition?
2. How can I change output and instead of abbreviation vol. get volume?
3. How can I write the author name Øksendal?

Answer 1

When you look at the jtnew.bst (which is the file specifying the styling of the bibliography), you'll find e.g. the following

FUNCTION {bbl.edition}
{ "ed." }

This tells BibteX what it should print when you need an "edition". Change that into

FUNCTION {bbl.edition}
{ "edition" }

And you get the change "ed." -> "edition".

You do the analogous thing for the volume:

FUNCTION {bbl.volume}
{ "vol." }

becomes

FUNCTION {bbl.volume}
{ "volume" }

Øksendal can be written in a few ways. You either have Unicode support (by using XeTeX, LuaTeX or input encoding settings), but BibTeX is not really Unicode aware, so you would have to use BibTeXu (which I never tried).

The other way is to simply write {\O}ksendal.

Answer 2

Regarding your third question: Write the name as {\O}ksendal. Encasing the "special" marks in curly braces is also the preferred method in BibTeX for diacritics (Umlaute, e.g., {\"a}), accented letters (e.g., {\'e} and {\’u}), and other composite characters such as the c with a cedilla or r with a háček ("v-check").

Regarding your first two questions: Make a copy of the file jtbnew.bst and call it, say, myjtbnew.bst. Open the new file in an editor, search for all instances of ed. (likely in the function bbl.edition) and vol., and replace them with your preferred alternatives. Save the file, update the tex file name database if necessary, and be sure to include the directive \bibliographystyle{myjtbnew} in your documents.