What is the Oxygen Isotope Composition of Venus? The Scientific Case for Sample Return from Earth’s “Sister” Planet
https://link.springer.com/article/10.1007/s11214-020-00669-8
What horticulture and space exploration can learn from each other: The Mission to mars initiative in the Netherlands
https://www.sciencedirect.com/science/article/abs/pii/S0094576520302988
World ships: Feasibility and Rationale
https://arxiv.org/abs/2005.04100