María Patta Tomás, Oviedo 1963, is a vocational student, and professor of biology who has taught at the University of Oviedo and various Asturian institutes, and is currently in the third year of Sociology at UNED. She was a documentalist at that university, and a Spanish teacher at the University of Tripoli. She also worksin the scientific and technical field as a translator from English, French and Italian to Spanish for the firm Spatrans Science (www.spatranscience.com).
María Paz Lebrero has taught at the Universidad Nacional de Educación a Distancia since 1986. She is the author or co-author of approximately a hundred books, audio visual materials and magazine articles . She has spoken at numerous conferences and training courses, both nationally and internationally, and has directed and participated in research funded by UNED and other bodies.