The far-infrared behaviour of Herbig Ae/Be discs: Herschel PACS photometryN. Pascual, B. Montesinos, G. Meeus, J. P. Marshall, I. Mendigutía and G. SandellA&A, 586 (2016) A6DOI: https://doi.org/10.1051/0004-6361/201526605