https://pure.psu.edu/en/publications/chip-package-electrical-interaction-in-organic-packages-with-embe/
Chip-package electrical interaction in organic packages with embedded actives - Penn State
organic packages
https://research.ibm.com/publications/direct-measurement-of-local-stress-in-first-level-flip-chip-organic-packages
Direct measurement of local stress in first-level flip-chip organic packages for ECTC 2010 - IBM...
Direct measurement of local stress in first-level flip-chip organic packages for ECTC 2010 by Ijeoma Nnebe et al.