Mid-infrared spectrum of the zodiacal light observed with ISOPHOT Ch. Leinert, P. Ábrahám, J. Acosta-Pulido, D. Lemke and R. Siebenmorgen A&A, 393 3 (2002) 1073-1079 Published online: 01 October 2002 DOI: 10.1051/0004-6361:20021029