"Eric Chatelain / VILLE DE BESANCON" . "2035-10-01"^^ . "2025-10-01"^^ . "_ECH4790Observatoire de Besan\u00E7on"@en . "L\u2019OBSERVATOIRE DE BESAN\u00C7ON"@fr . "_ECH4790Observatoire de Besan\u00E7on"@de . . . .