DiTrapani J, Rockwood N, Jeon M. Explanatory IRT analysis using the SPIRT macro in SPSS. TQMP. 2018;14(2):81-98. doi: 10.20982/tqmp.14.2.p081
Petit A, Castillo M, Gaspa A, Colomer D, Garcia de Albeniz X, Moreno C, Camos M, Mellado B, Mallofre C. Expression and mutational analyses of KIT and PDGFR-alpha in sarcomatoid renal cell carcinoma. Histopathology. 2009 Aug;55(2):230-2. doi: 10.1111/j.1365-2559.2009.03342.x