The solar wind velocity as determined from two-way Doppler measurements for near-sun radio sounding

Yakubov V.P., Yakovlev O.I., Efimov A.I., Erofeev A.P. The solar wind velocity as determined from two-way Doppler measurements for near-sun radio sounding // Изв. вузов. Радиофизика. 1991. Т. 34, № 6. C. 615–623.