ENGELS, E. JR.// SHEPARD, P.F.// THOMPSON, J.A. (PITTSBURGH UNIV., PA (UNITED STATES). DEPT. OF PHYSICS AND ASTRONOMY)United States. Dept. of Energy(United States. Dept. of Energy)1994.
CLELAND, W.E.// ENGELS, E. JR.// HUMANIC, T.J.// PERERA, U.// SHEPARD, P.F.// THOMPSON, J.A. (PITTSBURGH UNIV., PA (UNITED STATES). DEPT. OF PHYSICS AND ASTRONOMY)United States. Dept. of Energy(United States. Dept. of Energy)1993.
CLELAND, W.E.// ENGELS, E. JR.// HUMANIC, T.J.// PERERA, U.// SHEPARD, P.F.// THOMPSON, J.A. (PITTSBURGH UNIV., PA (UNITED STATES). DEPT. OF PHYSICS AND ASTRONOMY)United States. Dept. of Energy(United States. Dept. of Energy)1992.
ENGELS, E. JR.// PERERA, U.// SHEPARD, P.// THOMPSON, J.A. (PITTSBURGH UNIV., PA (UNITED STATES). DEPT. OF PHYSICS AND ASTRONOMY)United States. Dept. of Energy(United States. Dept. of Energy)1991.
CLELAND, W.E.//COON, D.D.//ENGELS, E. JR.//SHEPARD, P.//THOMPSON, J.A. (PITTSBURGH UNIV., PA (USA). DEPT. OF PHYSICS AND ASTRONOMY)United States. Dept. of Energy(United States. Dept. of Energy)1989.