Great that the superb paper on #skills clustering by Zhaolu Liu, Jonathan M. Clarke, Bertha Rohenkohl and Mauricio Barahona - commissioned under our Pissarides Review and funded by @nuffieldfoundation.org - has just been published in a leading journal:
https://journals.plos.org/complexsystems/article?id=10.1371/journal.pcsy.0000028#ack