Its a HAL website, the french equivalent of arxiv. Most french research institute have one to publish openly. https://en.wikipedia.org/wiki/Hyper_Articles_en_L

Its a HAL website, the french equivalent of arxiv. Most french research institute have one to publish openly. https://en.wikipedia.org/wiki/Hyper_Articles_en_Ligne https://en.wikipedia.org/wiki/Hyper_Articles_en_Ligne