Book  (Apr 1993)  Page(s) 135.  
 
Doc Polyantha, phlox-pink, 1954, ('Degenhard'); 'Robin Hood' x Polyantha seedling; deRuiter, Gregory, & Willicher Baumschulen. Description.

Book  (Jun 1992)  Page(s) 242.  
 
Mentioned as one of the "7 Dwarfs" series.

Book  (Jun 1992)  Page(s) 244.  
 
Degenhard Polyantha. ('Doc') De Ruiter, 1954. Parentage: 'Robin Hood' x Polyantha seedling. Pink.

Book  (1958)  Page(s) 85.  
 
Doc (Degenhard in Germany). Pol. (de Ruiter; int. Gregory and Willicher Baumschulen, '54.) Robin Hood x a Polyantha seedling. Small, semi-dbl. (15 petals), phlox-pink; large truss. Compact; very free bloom. (14)