BJÖRK , L., ERIKSON , U., FALK , J., INGELMAN , B. and LINDBLAD , G. (1974) “Improved Polymeric Contrast Agents for Roentgenologic Examination of the Gastrointestinal Tract: II. Preliminary Report on Animal Investigations”, Upsala Journal of Medical Sciences, 79(2), pp. 106-108. doi: 10.3109/03009737409178977.