TY - CONF AU - Yoshihiro Ohno C2 - CIE Symp. ''99 -75 Years of CIE Photometry , Budapest, HU DA - 1999-01-01 LA - en PB - CIE Symp. ''99 -75 Years of CIE Photometry , Budapest, HU PY - 1999 TI - Recent Developments in Detector-Based Photometry and Future Needs in Photometry ER -