Improvement of Ultrasonic Pulse Generator for Automatic Pipeline Inspection. - Noé Amir Rodríguez-Olivares; José Vicente Cruz-Cruz; A. Gomez-Hernandez; Rodrigo Hernández-Alvarado; Luciano Nava-Balanzar; Tomás Salgado-Jiménez; Jorge Alberto Soto-Cajiga (Sensors, 2018)