https://www.oulu.fi/en/theses/three-dimensional-geometry-based-radio-channel-model-parametrization-and-validation-10-ghz
Three-Dimensional Geometry-Based Radio Channel Model: Parametrization and Validation at 10 GHz |...
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https://www.dummies.com/article/academics-the-arts/study-skills-test-prep/armed-services/asvab-arithmetic-reasoning-practice-three-dimensional-geometry-questions-242310
ASVAB Arithmetic Reasoning Practice: Three-Dimensional Geometry Questions | dummies
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