"2001" . . "Boissier Samuel, Prantzos N.. {Chemo-spectrophotometric evolution of spiral galaxies: IV. Star formation efficiency and effective ages of spirals. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2001, 321 (4), pp.733-742. ⟨10.1046/j.1365-8711.2001.04049.x⟩" . "{Chemo-spectrophotometric evolution of spiral galaxies: IV. Star formation efficiency and effective ages of spirals" . .