Scheldt species source details
Skreslet, S., K. Olsen, A. Mohus & K.S. Tande. (2000). Stage-specific habitats of Calanus finmarchicus and Calanus helgolandicus in a stratified northern Norwegian fjord. ICES (International Council for the Exploration of the Sea) Journal of Marine Science 57(6):1656-1663.
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Skreslet, S., K. Olsen, A. Mohus & K.S. Tande
2000
Stage-specific habitats of Calanus finmarchicus and Calanus helgolandicus in a stratified northern Norwegian fjord.
ICES (International Council for the Exploration of the Sea) Journal of Marine Science
57(6):1656-1663.
Publication
Available for editors 
Calanus helgolandicus (Claus, 1863) represented as Calanus helgolandicus helgolandicus (Claus, 1863) (additional source)