Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Estling, R. Problems. Nature 344, 582 (1990). https://doi.org/10.1038/344582e0
Issue Date:
DOI: https://doi.org/10.1038/344582e0
Nature volume 344, page 582 (1990)
Estling, R. Problems. Nature 344, 582 (1990). https://doi.org/10.1038/344582e0
Issue Date:
DOI: https://doi.org/10.1038/344582e0