Estas fotos tienen licencia (CC)-by y se pueden usar libremente. Simplemente menciona la autoría si las utilizas en algún sitio -- Foto Alvy / Microsiervos
This photos are licensed (CC)-by and can be used freely. Just mention the author if you are going to use them anywhere -- Photo: Alvy / Microsiervos
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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.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue