Squirrel - Crawling RDF Knowledge Graphs on the Web. - Michael Röder; Geraldo de Souza; Axel-Cyrille Ngonga Ngomo (ISWC (2), 2020)

ORCA - a Benchmark for Data Web Crawlers. - Michael Röder; Geraldo de Souza; Denis Kuchelev; Abdelmoneim Amer Desouki; Axel-Cyrille Ngonga Ngomo (ICSC, 2021)