Tejeda-Sartorius, O.; Vaquera-Huerta, H.; Cadena-Iñiguez, J. Effect of Amaranth Residues (Amaranthus Hypochondriacus L.) on Weed Control and Yield or Radish, Onion and Carrot. Span. j. agric. res. 2011, 9, 284-295.