Long author names in BibTeX entry causes text to go over margins. How can I allow or force text breaks?

Question

I have a reference in my BibTeX bibliography file that has some really long author names:
@inproceedings{foo,
  title={Data Augmentation Using GANs for Speech Emotion Recognition},
  author={Chatziagapi, Aggelina and Paraskevopoulos, Georgios and Sgouropoulos, Dimitris and Pantazopoulos, Georgios and Nikandrou, Malvina and Giannakopoulos, Theodoros and Katsamanis, Athanasios and Potamianos, Alexandros and Narayanan, Shrikanth},
  booktitle={Proceedings of INTERSPEECH},
  pages={171--175},
  year={2019}
}

As you can see, reference [41] has some of the author names go over the margin. It seems to me that the compiler correctly breaks Sgouropoulos but not Giannakopoulos or Narayanan.
How do I allow or force line breaks in this situation?
Compilers used is PdfLaTeX 3.14159265-2.6-1.40.19 + Bib(la)tex 0.99d + PdfLaTeX (x2)

Peter Wilson · Accepted Answer

LaTeX is not very good at hyphenating some of your authors' names. You need to give it some help.
% namesprob.tex  SE 571116
documentclass{article}
%hyphenation{Gian-nak-opou-los}
%hyphenation{Nar-aya-nam} % Try this, or similar, for hyphenation
begin{document}
textbf{Default hyphenation}

begin{minipage}{0.5cm}
 % mbox{} is because LaTeX won't hyphenate first word in a paragraph
mbox{} Giannakopoulos

mbox{} Narayanam % LaTex doesn't know how to hyphenate this
end{minipage}

vspace{baselineskip}
textbf{Now with user-defined hyphenation}

begin{minipage}{0.5cm}
hyphenation{Gian-nak-opou-los}
hyphenation{Nar-aya-nam} % Try this, or similar, for hyphenation
mbox{} Giannakopoulos

mbox{} Narayanam % You have now told LaTex hyphenate this
end{minipage}
    
end{document}

Use the hyphenation macro to specify hyphenation positions.

Long author names in BibTeX entry causes text to go over margins. How can I allow or force text breaks?

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