Almansa A.F., Barreto Á., Kouremeti N., González R., Masoom A., Toledano C., Gröbner J., García R.D., González Y., Kazadzis S., Victori S., Álvarez Ó., Maupin F., Carreño V., Cachorro V.E., Cuevas E. The Langley ratio method, a new approach for transferring photometer calibration from direct sun measurements. (2024) Atmospheric Measurement Techniques, 17 (2), pp. 659 – 675, DOI: 10.5194/amt-17-659-2024