TY - JOUR TI - Qualification of Xylella fastidiosa from citrus trees by real-time polymerase chain reaction assay PY - 2002 AU - Oliveira, Antonio C. AU - Vallin, Marcelo A. AU - Semighini, Camile P. AU - Araújo, Welington Luiz de AU - Goldman, Gustavo Henrique AU - Machado, Marcos A. T2 - Phytopathology SN - 0031-949X PP - St. Paul VL - 92 IS - 10 SP - 1048-1054 ER -