1. ‘Study of microstrip antennas, microstrip phased arrays, and microstrip feed networks’, Tech. Rep., TR-77-406, Rome Air Development Centre, 21, October, 1977
2. ‘Theoretical investigation of the microstrip antenna’, Tech. Rep., PT-00929, New Mexico State Univ., Physic. and Sci. Lab., Las Cruces, 23, January, 1979