TY - JOUR IS - 6 JO - Biotelemetry PY - 1975 SN - 0301-5912 VL - 2 AU - Bigu-del-Blanco J AU - Romero-Sierra C LA - en N1 - FEMU ID: 14876; EMF-Portal URL: https://www.emf-portal.org/en/article/14876 SP - 341-353 TI - The properties of bird feathers as converse piezoelectric transducers and as receptors of microwave radiation. I. Bird feathers as converse piezoelectric transducers ER -