S. Manickudra et al., PLUTONIUM ISOTOPES IN THE SURFACE AIR AT VINCA-BELGRADE SITE IN MAY 1986, Journal of radioanalytical and nuclear chemistry, 199(1), 1995, pp. 27-34
Surface air concentrations of plutonium isotopes at the Vinca-Belgrade
site for the period May 1-15, 1986, are reported. The increase in 238
Pu/239,240Pu ratios confirms that the source of plutonium in surface a
ir was the Chernobyl accident.