Christian, P <br/><br/>
[On a non-constant time, continuously resgistering pulse frequency meter and its clinical application].  [electronic resource] 

 -  Zeitschrift fur Kreislaufforschung  Jun 1969 
 - 601-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0044-295X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arrhythmias, Cardiac--diagnosis<br/>Cardiology--instrumentation<br/>Cardiovascular Physiological Phenomena<br/>Electrocardiography<br/>Heart Rate<br/>Humans<br/>Posture<br/>Pulse<br/>Respiration<br/>Stress, Psychological--diagnosis<br/>Telemetry