Network of internet-controlled HF receivers for ionospheric researches - A. V. Koloskov; Ju. M. Jampolskij; A. V. Zalizovskij; V. G. Galushko; A. S. Kashcheev; S. La Khoz; A. Brekke; V. S. Belej; M. T. Ritveld (Radio Physics and Radio Astronomy, 2014)