Decametric Type III Bursts with Variable Sign of FrequencyDrift Rate - V. N. Melnik; A. I. Brazhenko; A. A. Konovalenko; K. Brian; B. P. Rutkevich; F. Zarka; T. Zakarashvili; V. V. Dorovskij; A. V. Frantsuzenko; A. A. Stanislavskij (Radio Physics and Radio Astronomy, 2013)