This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionPierre Strinati by Vladimir Posypai (cropped).jpg
English: Closer portrait of Swiss biospeleologist Pierre Strinati, cropped from a drawing by Vladimir Posypai. It is based on a photo of Villy Aellen and Pierre Strinati, taken by Patrick Dériaz at the centenary of French speleology in Millau in 1988, and was made with consent of the photo author.
Français : Le portrait rapproché est un dessin de Vladimir Posypai. Il s'agit d'une représentation artistique du biospéléologue suisse Pierre Strinati, d'après une photo de Villy Aellen et Pierre Strinati, prise par Patrick Dériaz au centenaire de la spéléologie française à Millau en 1988. Réalisé avec l'accord de l'auteur de la photo.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.