Search for photospheric footpoints of quiet Sun transition region loopsJ. Sánchez Almeida, L. Teriaca, P. Sütterlin, D. Spadaro, U. Schühle and R. J. RuttenA&A, 475 3 (2007) 1101-1109DOI: https://doi.org/10.1051/0004-6361:20078124