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References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . Česko-Slovenská filmová databáze. Retrieved . wikidata.org.
  2. [1] ↑ . Česko-Slovenská filmová databáze. Retrieved . wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Petr Ptáček. Retrieved May 3, 2026, from https://4ort.xyz/entity/petr-pt-ek
MLA “Petr Ptáček.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/petr-pt-ek.
BibTeX @misc{4ortxyz_petr-pt-ek_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Petr Ptáček}}, year = {2026}, url = {https://4ort.xyz/entity/petr-pt-ek}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Petr Ptáček — https://4ort.xyz/entity/petr-pt-ek (retrieved 2026-05-03)

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