Braždžionytė, J., Macas, A. and Žaliūnas, R. (2007) “Evaluation of Intra-aortic Balloon Counterpulsation Impact on Stroke Volume using a Non-invasive Technique: Impedance Cardiography”, Elektronika ir Elektrotechnika, 79(7), pp. 53–58. doi:10.5755/j02.eie.10839.