Jensen B. A connection between plane and cylindrical symmetry in general relactivity / B.Jensen,J.Kucera, 1993. - 6 p. - Текст : непосредственный.
Jensen B. On a gravitational Aharonov-Bohm effect / B.Jensen,J.Kucera, 1993. - 18 p. - Текст : непосредственный.