@misc{wiltshire_experimental_procedures_1991, 
author={Wiltshire, K. H.},
title={Experimental procedures for the fractionation of phosphorus in sediments with emphasis on anerobic techniques},
year={1991},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Wiltshire, K.: Experimental procedures for the fractionation of phosphorus in sediments with emphasis on anerobic techniques. Verhandlungen (Internationale Vereinigung fuer  theoretische und angewandte Limnologie). 1991. vol. 24, 3073-3078.}}