| Conductividad eléctrica de las soluciones nutritivas |
Página web en castellano y en inglés | CE Gratis en la web |
| Determinación del pH por colorimetría |
Página web en castellano y en inglés | pH Gratis en la web |
| Water supply and the nutrient solution | Article in English | Published in Practical Hydroponics and Greenhouses magazine, issue No. 113, July-August 2010, pages 40-45 |
| Our own Tower of Babel | Article in English | Waiting to be published in Practical Hydroponics and Greenhouses magazine, issue No. 115, November-December 2010 |
| Soilless growing of potato seeds in Peru | Article in English | Waiting to be published in Practical Hydroponics and Greenhouses magazine during next year |

.gif)
.gif)