The catalogue raisonné is divided into two sections dedicated to Lucas and Marten van Valckenborch. Each section begins with a discussion of the artist's life and career, followed by the catalogues of painitngs and graphic works/drawings.. 
The catalogues raisonnés of the paintings contains separate sections for lost works, questionable paintings, works by followers or from the artist's studio, and rejected attributions. There is also a separate section for the graphic works.

In addition to the catalogues raisonnes of the artists' works, the publication includes brief biographies of the artists, a concordance, lists of collections housing the artists' works, a genealogical table, and a bibliography.

Full updated version with supplements from 2019 could be foun with the following link: 

https://cataloguerouge.com/catalogue/lucas-und-marten-van-valckenborch-1535-1597-und-1534-1612-das-gesamtwerk-mit-kriti-1