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Prosen, Marijan (10. marec 2016). »Vozovi na nebu«(PDF). Arhivirano iz prvotnega spletišča(PDF) dne 14. decembra 2018. Pridobljeno 14. decembra 2018.
web.archive.org
»Polaris: The North Star«. Constellation Guide. Constellation Guide. 28. julij 2014. Arhivirano iz prvotnega dne 15. decembra 2018. Pridobljeno 14. decembra 2018.{{navedi splet}}: Vzdrževanje CS1: bot: neznano stanje prvotnega URL-ja (povezava)
Prosen, Marijan (10. marec 2016). »Vozovi na nebu«(PDF). Arhivirano iz prvotnega spletišča(PDF) dne 14. decembra 2018. Pridobljeno 14. decembra 2018.