PUTNAM C R <br/><br/>
Commutation Properties of Hilbert Space Operation 

 - NEW YORK  Springes verlag  1967 
 - XI+167 pp 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commutation
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Communication system<br/>Space communication