Shervaton, V. G. <br/><br/>
Hyperbolic functions 
V. G. Shervaton 
 - Boston  D. C. Heath and Company  1963 
 - 55p.  20cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Exponential functions
<br/><br/><label>LC Class. No.: </label>MATH QA342.S478