1. Official Methods of Analysis;AOAC,1980
2. Edible Wild Plants of New Brunswick as a Source of Riboflavin;Barberie,1946
3. Cultures of the North Pacific Coast;Drucker,1965
4. Uber denspurenelementgengehalt einiger gewahnlichsten finnischen beerenfruchte;Erkama;Suom. Kemistil. Acta,1953
5. Manual salicylate-hypochlorite procedure for determination of ammonia in Kjeldahl digests;Fukomoto;J. Assoc. Off Anal. Chem,1982