https://research.ibm.com/publications/measurement-of-microbump-thermal-resistance-in-3d-chip-stacks
Measurement of microbump thermal resistance in 3D chip stacks for SEMI-THERM 2012 - IBM Research
Measurement of microbump thermal resistance in 3D chip stacks for SEMI-THERM 2012 by E.G. Colgan et al.