Hi

Is there any efficient way (better than looping over all vertices) to find every vertex with specific element in vector property map?

I’m trying to create network of citations with authors as nodes, from network of papers, where edges are citations and every node has property vector<int64_t> with IDs of authors.

I tried **find_vertex**, but:

```
find_vertex(gcit, v_authors, [145654338])
```

will return only vertices (papers) written solo by 145654338.

Thanks!