Цитата Сообщение от Jean-Philippe
As you can see, sometimes there are contradictions between books written by famous specialists and... facts. 8)
Not facts. Information.
In the article "The first all-weather generation: MiG-21PF fighter and its derivatives" from Airfleet 3.2003, Type 94 designation was used both for the PFS and the PFM. Type 77B was for the MiG-21FL.