Vandemark, G. J.; Barker, B. M. (2003-11-01). "Quantifying Phytophthora medicaginis in Susceptible and Resistant Alfalfa with a Real-Time Fluorescent PCR Assay". Journal of Phytopathology. 151 (11–12): 577–583. doi:10.1046/j.0931-1785.2003.00768.x. ISSN1439-0434.
Vandemark, G. J.; Barker, B. M. (2003-11-01). "Quantifying Phytophthora medicaginis in Susceptible and Resistant Alfalfa with a Real-Time Fluorescent PCR Assay". Journal of Phytopathology. 151 (11–12): 577–583. doi:10.1046/j.0931-1785.2003.00768.x. ISSN1439-0434.