Burch, G E <br/><br/>
A new symbol for the equilateral tetrahedral reference frame.  [electronic resource] 

 -  American heart journal  Apr 1973 
 - 569 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-8703 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Terminology as Topic<br/>Vectorcardiography