1. Universidad Surcolombiana Departamento de Ingeniería Agrícola Av. Pastrana Borrero Carrera 1a 410001 Neiva Huila Colombia
2. Newcastle University School of Engineering Claremont Road NE17RU Newcastle upon Tyne United Kingdom
3. Northumbria University Department of Applied Sciences Ellison Pl NE18ST Newcastle upon Tyne United Kingdom