Remarks on the ambiguity of distance determination in Friedmann's cosmological model

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Applicationes Mathematicae / All issues

A. Zięba Applicationes Mathematicae 12 (1971), 181-185 DOI: 10.4064/am-12-2-181-185