1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F
1992ApJ...396...80F