Article (website)  (2014)  
 
1065 ornamentals flower (rose), Rosa sp., Paula, USA ca.1960, Gamma rays terminal buds (Queen Elisabeth) dusty coral flower colour rest of genotype unchanged MBNL 31

Book  (Apr 1993)  Page(s) 436.  
 
Paula Grandiflora, dusty slamon, Radiation induced 'Queen Elizabeth' sport; James, John.

Book  (1988)  Page(s) 198.  
 
James (1983) reports on two induced mutants, 'Paula' from 'Queen Elizabeth' and 'Pink Hat' from an unnamed R. floribunda. Both were obtained as early as the fifties by γ-irradiation of actively growing terminal buds..

Book  (1988)  Page(s) 200.  
 
Table 26: Commercial mutants of roses
Paula, U.S.A., +/- 1960, Terminal buds, γ-rays (Queen Elizabeth), Dusty coral flower colour; rest of genotype unchanged