The Westerbork Northern Sky Survey (WENSS) - I. A 570 square degree Mini-Survey around the North Ecliptic PoleR. B. Rengelink, Y. Tang, A. G. de Bruyn, G. K. Miley, M. N. Bremer, H. J.A. Röttgering and M. A.R. BremerAstron. Astrophys. Suppl. Ser., 124 2 (1997) 259-280DOI: https://doi.org/10.1051/aas:1997358