@article{Belensov:2004,author = {P. E. Belensov},title = {Comments on the article "Collective ion acceleration in systems with a virtual cathode"},publisher = {Physics-Uspekhi},year = {2004},journal = {Phys. Usp.},volume = {47},number = {2},pages = {209-211},url = {https://ufn.ru/en/articles/2004/2/j/},doi = {10.1070/PU2004v047n02ABEH001715}}