Ortín, Tomás. <br/><br/>
Gravity and strings / 
Tomás Ortín. 
 - Cambridge :  Cambridge University Press,  2004. 
 - 684 p. ;  26 cm. 
 - Cambridge monographs on mathematical physics .
<br/><br/><label>ISBN: </label>0521824753 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quantum gravity<br/>String models