Latex Bibliography Title Capital Letters In Calligraphy

Starting a new thread based on Dan's suggestion:

From the example posted in the other thread, the exported BibTeX for the title field is now (with the updated translator):

title = {The electrodynamics of substances with simultaneously negative values of e and µ},

Rather than the '?' that appeared prior to the latest translator update. However, there are two problems:
1) Epsilon should be ε, not e, but more importantly...
2) As far as I know, LaTeX/BibTeX chokes on those characters; they should actually be $\epsilon$ and $\mu$, in order to be properly rendered in a bibliography. This is what I would have done if creating the BibTeX entry manually. As it is now, a PDF compiled referencing that BibTeX entry displays:

V. G. Veselago, "The electrodynamics of substances with simultaneously
negative values of and ," Soviet Physics Uspekhi, vol. 10, no. 4, pp. 509-
514, 1968.

What is the supported/recommended method for inclusion of Greek characters in Zotero fields?