@article {, title = {AlGaN/GaN-based SAW delay-line oscillators}, journal = {Microwave and Optical Technology Letters}, volume = {50}, year = {2008}, month = {noviembre/2008}, pages = {2967-2970}, issn = {XX}, doi = {doi: 10.1002/mop.23852}, author = {A. Jim{\'e}nez and J. Grajal and F. Calle and J. Pedr{\'o}s and J.L. Mart{\'\i}nez} }