The publication is subtitled "Skulpturen im Raum von Licht und Zeit." The chronological catalogue raisonné is organized by theme: stelae, organic forms, geometric shapes, mirror/glass, and art in public spaces. The categories are further subdivided into groups: light, water, overall designs, funerary monuments, and works commissioned by road and highway authorities. There is a list of works arranged chronologically and alphabetically by title. The publication also contains lists of solos exhibitions since 1986, exhibitions of Group Zero from 1986, a bibliography of works published since 1986, and a list of works in public collections. Works not included in the present catalogue (multiples, ceramic sculptures, etc.) will be the subject of a future publication.