Microwaves101 | Voltage standing wave ratio (VSWR)
VSWR / Return Loss Calculator - Engineering Calculators & Tools
VSWR vs Return Loss - everything RF
Electronic Warfare and Radar Systems Engineering Handbook - Electronic Warfare and Radar Systems Engineering Handbook - Voltage Standing Wave Ratio (VSWR)/ Reflection Coefficient / Mismatch Loss - RF Cafe
General Design Criteria: VSWR/Return Loss - SSI Cable