[en] This paper presents data on two-photon production of a pair of vector mesons, and on resonance production of three pions. Vector pair production was studied in three channels: γγ→ωρ, γγ→ρφ, and γγ→ωφ. For the first channel also a partial-wave analysis was performed of the reaction γγ→π⁺π⁺π^-π^-π⁰. The reaction γγ→ρφ was observed for the first time. There is also evidence for the reaction γγ→ωφ. The γγ→π⁺π^-π⁰ reaction is dominated by the formation of α₂ in its helicity 2 state. A partial-wave analysis has revealed the π₂(1670) state with a two-photon partial width of (0.25±0.15) keV which is significantly lower than indicated by previous experiments. There is an indication for an additional peak at 1.8 GeV with a preferred spin-parity assignment 2^-