The EIA attributes to the Oil and Gas Journal, and Busch just copies that attribution in:
Busch:
The Misperception of the Russian-Ukrainian Gas Problem
According to the Oil and Gas Journal, Ukraine has roughly 40 trillion cubic feet (Tcf) of natural gas reserves, from which roughly 0.68 Tcf was produced in 2005. In 2006, Ukraine produced 0.67 Tcf and consumed 3.1 Tcf of natural gas, making it the former Soviet Union's largest natural gas net importer (2.4 Tcf, or 78 percent of consumption). Ukraine is the sixth-largest consumer of gas in the world and consumes more gas than Poland, the Czech Republic, Hungary, and Slovakia combined. Since the early 1990s, UkraineâTMs usage of natural gas as a share of its total energy consumption has increased by 10 percent to comprise over half of UkraineâTMs energy usage.
...etc...
EIA:
Ukraine Energy Data, Statistics and Analysis - Oil, Gas, Electricity, Coal
According to the Oil and Gas Journal Ukraine has roughly 40 trillion cubic feet (Tcf) of natural gas reserves, from which roughly 0.68 Tcf was produced in 2005. In 2006, Ukraine produced 0.67 Tcf and consumed 3.1 Tcf of natural gas, making it the former Soviet Union's largest natural gas net importer (2.4 Tcf, or 78 percent of consumption, see Fig. 2). Ukraine is the sixth-largest consumer of gas in the world and consumes more gas than Poland, the Czech Republic, Hungary, and Slovakia combined. Since the early 1990s, Ukraine's usage of natural gas as a share of its total energy consumption has increased by 10 percent to comprise over half of Ukraine's energy usage
A piece of work indeed... The "editorial" is nearly all copy-paste with a few words changed.