@misc{indiciae3ba76113e0b1, title = {Potato spindle tuber viroid. X. Visualization and size determination by electron microscopy.}, author = {J M Sogo and T Koller and T O Diener}, year = {1973}, doi = {10.1016/s0042-6822(73)81009-8}, url = {https://pubmed.ncbi.nlm.nih.gov/4728831/}, note = {Source identifier: 4728831} }