The importance of human relationships in scientific productivity. - Lucia Fonseca; Sancia Velloso; Susana Wofchuk; Leopoldo de Meis (Scientometrics, 1997)

The relationship between advisors and students. - Lucia Fonseca; Sancia Velloso; Susana Wofchuk; Leopoldo de Meis (Scientometrics, 1998)