Predatory journals and their identification
Juan Antonio Lugo-Machado, Abril Alejandra Pacheco-Sánchez, Patricia Emiliana Garcia-Ramirez, Elizabeth Medina-Valentón, Ana Luisa Escobar-Morales
The Impact Factor in scientific journals
Juan Antonio Lugo-Machado, Rocío Milagro López-López, Elizabeth Medina-Valentón, Esmeralda Ortega Villa