The 5 papers which experimentally show that the PCTFP (Fhl1-Ifh1) has physical interaction

Experimental System Publication Throughput
Two-hybrid Martin DE (2004) Low Throughput
Affinity Capture-Western Martin DE (2004) Low Throughput
Affinity Capture-Western Rudra D (2005) Low Throughput
Affinity Capture-Western Rudra D (2005) Low Throughput
Affinity Capture-Western Downey M (2013) Low Throughput

The 2 papers which experimentally show that the PCTFP (Fhl1-Ifh1) has genetic interaction

Experimental System Publication Throughput
Dosage Rescue Cherel I (1995) Low Throughput
Synthetic Rescue Cherel I (1995) Low Throughput