| Journal: | Revista mexicana del petróleo |
| Database: | PERIÓDICA |
| System number: | 000095802 |
| ISSN: | 0188-4107 |
| Authors: | Voza, C |
| Year: | 1990 |
| Season: | Jul-Ago |
| Volumen: | 32 |
| Number: | 321 |
| Pages: | 68-68 |
| Country: | México |
| Document type: | Nota breve o noticia |
| Approach: | Descriptivo |
| Disciplines: | Ciencias de la computación |
| Keyword: | Llaves-proteccion, Computadoras, Software |
| Keyword: | Computer science, Protection keys, Computers, Software |
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