\version "2.13.21"

dynamics = {
  \relative c' {
    c8\mf\< d e f g\!\ff\> f e d c1\!\mf
  }
}

\score {
  \new Staff {
    \dynamics
    \override DynamicText #'font-name = "Linux Libertine O Bold Italic"
    \dynamics
  }
}