| [the el-tor cholera pandemic in the years 1961-1968]. | | 1973 | 4279652 |
| detection of cholera carriers at el tor quarantine camp during the pilgrimage seasons 1966 and 1967. | | 1967 | 5610229 |
| zentralblatt für bakteriologie - 100 years ago: early considerations of the el tor vibrios. | | 2006 | 16750934 |