| Paper | Date | Page | Article Title | Type | ||
|---|---|---|---|---|---|---|
| 1 |
 |
Helper Journal | 1950-12-21 | 18 | page | |
| 2 |
 |
Helper Journal | 1962-01-18 | 7 | page | |
| 3 |
 |
Helper Journal | 1957-08-08 | 5 | page | |
| 4 |
 |
Helper Journal | 1961-10-26 | 4 | page | |
| 5 |
 |
Helper Journal | 1957-03-21 | 4 | page |