Evaluation of 99m Tc-DTPA for the measurement of glomerular filtration rate.Johannes F. Klopper, Powell Richards, William C. Eckelman et al.|PubMed|1972Cited by 181
Assessment of thyroid function and anatomy with technetium-99m as pertechnetate.Harold Atkins, Powell Richards|PubMed|1968Cited by 89
Whole-body retention of radioxenon.H. Susskind, Powell Richards, Kenneth J. Ellis et al.|PubMed|1977Cited by 26
Vascular Imaging with<sup>99m</sup>Tc-Red Blood CellsHarold Atkins, Powell Richards, William C. Eckelman et al.|Radiology|1973Cited by 17
Splenic sequestration of 99m Tc-labeled red blood cells.Harold Atkins, Powell Richards, Johannes F. Klopper et al.|PubMed|1972Cited by 12