Luís Lopes

$ yum install liberation-sans-fonts

solved it! :-)

It doesen't work with me.. =/

tried with entities or α β γ δ ε ϝ ϛ ζ η θ ι κ λ μ ν ξ ο π ϟ ϙ ρ σ τ υ φ χ ψ ω ϡ

and characters α β γ δ ε ϝ ϛ ζ η θ ι κ λ μ ν ξ ο π ϟ ϙ ρ σ τ υ φ χ ψ ω ϡ encoded in utf-8