Karen Maas; Frank Boons (2010). "7. CSR as a strategic activity". In Céline Louche; Samuel O. Idowu; Walter Leal Filho (eds.). Innovative CSR: From Risk Management to Value Creation. Greenleaf Publishing. p. 158. ISBN978-1-906093-35-8.
Fliers, E.; Demeneix, B.; Bhaseen, A.; Brix, T. H. (28 September 2018), "European Thyroid Association (ETA) and Thyroid Federation International (TFI) Joint Position Statement on the Interchangeability of Levothyroxine Products in EU Countries", European Thyroid Journal, 7 (5), NCBI.nlm: 238–242, doi:10.1159/000493123, PMC6198781, PMID30374426
Fliers, E.; Demeneix, B.; Bhaseen, A.; Brix, T. H. (28 September 2018), "European Thyroid Association (ETA) and Thyroid Federation International (TFI) Joint Position Statement on the Interchangeability of Levothyroxine Products in EU Countries", European Thyroid Journal, 7 (5), NCBI.nlm: 238–242, doi:10.1159/000493123, PMC6198781, PMID30374426
ncbi.nlm.nih.gov
Fliers, E.; Demeneix, B.; Bhaseen, A.; Brix, T. H. (28 September 2018), "European Thyroid Association (ETA) and Thyroid Federation International (TFI) Joint Position Statement on the Interchangeability of Levothyroxine Products in EU Countries", European Thyroid Journal, 7 (5), NCBI.nlm: 238–242, doi:10.1159/000493123, PMC6198781, PMID30374426