A low-luminosity type-1 QSO sample - I. Overluminous host spheroidals or undermassive black holes?G. Busch, J. Zuther, M. Valencia-S. , L. Moser, S. Fischer, A. Eckart, J. Scharwächter, D. A. Gadotti and L. WisotzkiA&A, 561 (2014) A140DOI: https://doi.org/10.1051/0004-6361/201322486