Ecological long-term research at Helgoland (German Bight, North Sea): retrospect and prospect: an introduction
Franke, H.-D.; Buchholz, F.; Wiltshire, K.H. (2004). Ecological long-term research at Helgoland (German Bight, North Sea): retrospect and prospect: an introduction. Helgol. Mar. Res. 58(4): 223-229. https://dx.doi.org/10.1007/s10152-004-0197-z