Bharadwaj, D. C <br/><br/>
On the Organization of Spencerisporites Chaloner and Endosporites Wilson & Coe with Remarks on their Systematic Posittion 

 - Ranchi :   Catholic Press,   1965. 
 -  il, lám ;   18 cm. 
<br/><br/> The Palaeobotanist, vol.13. nº1, 1964