00516naa#a2200169#i#450# EN\RIOR\bibl\6303 20250208232050.6 2500-1469 20150430b2015####ek#y0engy0150####ca RUS RU Analysis of the connections of regional transport and economic systems by assessing transport costs Journal article Moscow Publishing Center RIOR 2015 6 с. Journal article local Roslyakova Natalya riorpub.com