Anomaly in the HTSC system (BiPb)2Sr2Ca2Cu3O10-{\delta} at the   temperature 203.7K
  Broadening of the electron paramagnetic resonance (EPR) line of the paramagnetic probe decorated on the superconducting system surface was detected at the temperature T>Tc. The source of the anomaly and the conditions of its emergence were revealed. The analysis of the experimental results with taking into account the literature data serves as the basis to consider that the observed broadening of the EPR line of the paramagnetic probe at 203.7K resulted from the transition of the system under study into the superconducting state. 
I. Akhvlediani, T. Kalabegishvili, N. Kekelidze, N. Margiani, and N.   Papunashvili
cond-mat.supr-con