1. “Improving the fertilizer recommendations for nitrogen in maize, adapted for use in the crop production systems of conservation agriculture,”;Acosta,2005
2. Manejo integrado de plantas daninhas em plantio direto no Paraná;Adegas,1998
3. Organic matter delays but does not prevent phosphate sorption by cerrado soils from Brazil;Afif;Soil Sci.,1995
4. Época e métodos de aplicação de corretivos nos solos;Aghinoni,1989
5. A alelopatia e a plantas;Almeida,1988