Janusz Brzd?k, Krzysztof Ciepli?ski, Themistocles M. Rassias <br/><br/>
Developments in Functional Equations and Related Topics  

 -  Springer  Springer  2017 
<br/><br/><label>ISBN: </label>9783319617329 
<br/><br/><label>Source: </label>EBOOK