Seufert, Eric Benjamin <br/><br/>
Freemium economics :  Leveraging analytics and user segmentation to drive revenue 

 - London:  Elsevier,  2014. 
 - xix,233p. 
<br/><br/><label>ISBN: </label>9780124166905 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business Economics and  Finance