00876nam 2200265 450 991072800020332120230627100458.020230627d1984----m y0engy50 ba engFR 001yyTunnel entrance lightinga survey of fundamentals for determining the luminance in the threshold zoneCommission Internationale de L'EclairageParisBureau central de la CIE198484 p.ill.28 cmPublication CIE61 - 1984Standard CIEIlluminotecnicaStandardInternational Commission on Illumination151581ITUNINAREICATUNIMARCBK991072800020332110 D IV 195DONODIFRAIA2019DINELDINELTunnel entrance lighting3385715UNINA