A modified, step-by-step procedure for the gentle bleaching of delicate fossil leaf cuticles Mariah M. Howell , Rolf Gossmann , Carole T. Gee 2022 | volume 78 | issue 2 | pages 445–450 PDF
External morphology of Pinus timleri seed cones from the Neogene of the Lower Rhenish Basin, W Germany Rolf Gossmann , Philipp L. Knaus 2018 | volume 74 | issue 1-2 | pages 189–195 PDF
