@article{SpietzSproewitzSeefeldtetal.2021, author = {Peter Spietz and Tom Spr{\"o}witz and Patric Seefeldt and Jan Thimo Grundmann and Rico Jahnke and Tobias Mikschl and Eugen Mikulz and Sergio Montenegro and Siebo Reershemius and Thomas Renger and Michael Ruffer and Kaname Sasaki and Maciej Sznajder and Norbert T{\´o}th and Matteo Ceriotti and Bernd Dachwald and Malcolm Macdonald and Colin McInnes and Wolfgang Seboldt and Dominik Quantius and Waldemar Bauer and Carsten Wiedemann and Christian D. Grimm and David Hercik and Tra-Mi Ho and Caroline Lange and Nicole Schmitz}, title = {Paths not taken - The Gossamer roadmap's other options}, journal = {Advances in Space Research}, volume = {67}, number = {9}, pages = {2912 -- 2956}, doi = {10.1016/j.asr.2021.01.044}, year = {2021}, }