Durak, Hatice, et al. “A Case of Parathyroid Adenoma With Brown Tumors Diagnosed by ²⁰¹thallium – ⁹⁹ᵐtechnetium Subtraction Scintigraphy”. The Turkish Journal of Pediatrics, vol. 31, no. 2, Apr. 1989, pp. 151-4, https://doi.org/10.24953/turkjpediatr.1989.3839.