Prospering on the banks of the Rhine. 

 - Gran Bretaņa :   The Listener,   1969. 
 - p. 204-205 
 - Irregular 
 - Vol. 82 no. 2107 (Aug. 1969) 
 - The Listener ;   vol. 82 no. 2107 .
 - Inglaterra.   The Listener. .