Book (1999) Page(s) 20.
In 1985, the [Rosen-Tantau's] fortune and rose-breeding operations passed into the hands of long-time colleague Hans Jürgen Evers. Successful new introductions like 'Diadem' and 'Monica', which helped bring the moderately profitable field-growing of cutting roses in Germany to a renaissance in the 1980s, are his works.
Website/Catalog (Nov 1997) Page(s) 8.
Monica Hybrid Tea. Tantau 1985... copper and gold blend; excellent long-stemmed cut flower
Book (Apr 1993) Page(s) 387.
Monika® Hybrid Tea, pink blend, 1985, (TANaknom; 'Monica'); Tantau, M. Description.