How to filter publications with multiple tags?

[cmas1]

I have been using this template to showcase the different research projects I am working on. I would like to add, to each project page a list of the relevant publications from the bib file.
To do this, I have added a field called topic to each publication item, to tag the project it relates to. For example,

@book{einstein1956investigations,
bibtex_show={true},
topic={project_1},
title={Investigations on the Theory of the Brownian Movement},
author={Einstein, Albert},
year={1956},
publisher={Courier Corporation,}
}

In the end I am able to add the list of relevant publications to a project page with just a few lines

<h2>Related Publications</h2>
<div class="publications">
  {% bibliography -f papers -q @*[topic=project_1]* %}
</div>

My problem is that some publications are actually related to multiple projects. However, if I write something like
@Article{einstein1950meaning,
abbr={AJP},
bibtex_show={true},
topic={project_1,project_2},
title={The meaning of relativity},
author={Einstein, Albert and Taub, AH},
journal={American Journal of Physics,},
volume={18},
number={6},
pages={403--404},
year={1950},
publisher={American Association of Physics Teachers,}
}

the entry is not captured by the filter. Is there a way to do such a thing?

[cmas1]

I found the answer to my question in one issue of the jekyll-scholar package inukshuk/jekyll-scholar#249

I just had to change the filter in the query replacing = with ~=

In other words

<h2>Related Publications</h2>
<div class="publications">
  {% bibliography -f papers -q @*[topic~=project_1]* %}
</div>