BibTeX, biblatex and biber ⇒ dash instead of author name in repeated refs

[christina_t]

Hi all,

I am using the natbib package with a bibliography style close to humannat, (I have changed it in only one place), and I would like to get a long dash instead of the full author name in multiple references where the author is the same. I would be grateful for any suggestions

Many thanks
Christina

ps. shall I add an example of my humannat bib style?

[cgnieder]

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Regards