{"references": ["J. W. DIETRICH, A. TESCHE, C. R. PICKARDT & U. MITZDORF (2004) THYROTROPIC FEEDBACK CONTROL: EVIDENCE FOR AN ADDITIONAL ULTRASHORT FEEDBACK LOOP FROM FRACTAL ANALYSIS, Cybernetics and Systems, 35:4, 315-331, DOI: 10.1080/01969720490443354", "Johannes W. Dietrich, Gabi Landgrafe, and Elisavet H. Fotiadou, \"TSH and Thyrotropic Agonists: Key Actors in Thyroid Homeostasis,\" Journal of Thyroid Research, vol. 2012, Article ID 351864, 29 pages, 2012. https://doi.org/10.1155/2012/351864.", "Midgley JEM, Hoermann R, Larisch R, Dietrich JW. Physiological states and functional relation between thyrotropin and free thyroxine in thyroid health and disease: in vivo and in silico data suggest a hierarchical model. Journal of Clinical Pathology 2013;66:335-342.", "Hoermann R, Midgley JE, Larisch R, Dietrich JW. Is pituitary TSH an adequate measure of thyroid hormone-controlled homoeostasis during thyroxine treatment? Eur J Endocrinol. 2013 Jan 17;168(2):271-80. doi: 10.1530/EJE-12-0819. PMID 23184912.", "Hoermann R, Midgley JE, Larisch R, Dietrich JW. Integration of Peripheral and Glandular Regulation of Triiodothyronine Production by Thyrotropin in Untreated and Thyroxine-Treated Subjects. Horm Metab Res. 2015 Aug;47(9):674-80. doi: 10.1055/s-0034-1398616. PMID 25750078."]}

SimThyr is a numeric simulator of pituitary-thyroid feedback control (aka thyrotropic feedback control, hypothalamus-pituitary-thyroid axis or thyroid homeostasis).