- Author: Ivan Katchanovski Zenon E. Kohut Bohdan Y. Nebesio Myroslav Yurkevich
- Language: English
- Year: 2013
- Author: Ivan Katchanovski Zenon E. Kohut Bohdan Y. Nebesio Myroslav Yurkevich
- Language: English
- Year: 2013
- Author: Ivan Katchanovski Zenon E. Kohut Bohdan Y. Nebesio Myroslav Yurkevich
- Language: English
- Year: 2013
- Author: Ivan Katchanovski
- Language: English
- Year: 2006