00529naa#a2200169#i#450# EN\\bibl\113098 20260316085434.1 2311-1402 20110925b2011####ek#y0engy0150####ca RUS RU Development of distance education models based on individual learning trajectories Journal article Nizhnevartovsk Nizhnevartovsk State University 2011 2 с. Journal article local Razumova Natalia Alexandrovna nvsu.editorum.ru