| Subject | English | German |
| radiat. | Tuyn method | Tuynsche Methode (of track density counting) |
| radiat. | Tuyn method | Methode von Tuyn (of track density counting) |
| radiat. | Tuyn's method | Tuynsche Methode (of track density counting) |
| radiat. | Tuyn's method | Methode von Tuyn (of track density counting) |