Stighelen, K. v. d., & Bastiaensen, J. (2020). The sitters in a family portrait by Rubens in the Staatliche Kunsthalle, Karlsruhe: An unknown couple with a child painted by Rubens after his return to Antwerp from Italy habe been identified from a coat of arms in a drawn copy of the portrait by another artist : they are Robert Staes, court goldsmith to the Archdukes Albert and Isabella, his wife, Anna Rindfleisch, and their son, Albert. The Burlington magazine, 162(1410), pp. 756-765.

Stighelen, Katlijne van der, and Jean Bastiaensen. "The Sitters in a Family Portrait By Rubens in the Staatliche Kunsthalle, Karlsruhe: An Unknown Couple With a Child Painted By Rubens After His Return to Antwerp From Italy Habe Been Identified From a Coat of Arms in a Drawn Copy of the Portrait By Another Artist : They Are Robert Staes, Court Goldsmith to the Archdukes Albert and Isabella, His Wife, Anna Rindfleisch, and Their Son, Albert." The Burlington Magazine 162, no. 1410 (2020): 756-765.

Stighelen, Katlijne van der, and Jean Bastiaensen. "The Sitters in a Family Portrait By Rubens in the Staatliche Kunsthalle, Karlsruhe: An Unknown Couple With a Child Painted By Rubens After His Return to Antwerp From Italy Habe Been Identified From a Coat of Arms in a Drawn Copy of the Portrait By Another Artist : They Are Robert Staes, Court Goldsmith to the Archdukes Albert and Isabella, His Wife, Anna Rindfleisch, and Their Son, Albert." The Burlington Magazine 162.1410 (2020): 756-765.