A qualitative classification of extraterrestrial civilizations
Research article (Springer Link (Chiba Institute of Technology), 2020) · cited 13× · AI/ML
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Direct Wikidata claims
- [2] ↑ A qualitative classification of extraterrestrial civilizations — instance of (P31): scholarly article. wikidata.org.
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4ort.xyz Knowledge Graph. (2026). A qualitative classification of extraterrestrial civilizations. Retrieved May 24, 2026, from https://4ort.xyz/entity/a-qualitative-classification-of-extraterrestrial-civilizations
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“A qualitative classification of extraterrestrial civilizations.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/a-qualitative-classification-of-extraterrestrial-civilizations.
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@misc{4ortxyz_a-qualitative-classification-of-extraterrestrial-civilizations_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{A qualitative classification of extraterrestrial civilizations}}, year = {2026}, url = {https://4ort.xyz/entity/a-qualitative-classification-of-extraterrestrial-civilizations}, note = {Accessed: 2026-05-24}}
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