On faint companions in the close environment of star-forming dwarf galaxies - Possible external star formation triggers?K. G. Noeske, J. Iglesias-Páramo, J. M. Vílchez, P. Papaderos and K. J. FrickeA&A, 371 3 (2001) 806-815DOI: https://doi.org/10.1051/0004-6361:20010446