33.

N. Cavadini, W. Henggeler, A. Furrer, H.U. Güdel, K. Krämer, and H. Mutka
Magnetic excitations in the quantum spin system KCuCl3
Eur. Phys. J. B 7 (1999) 519 – 522.

34.

K.W. Krämer, H.U. Güdel, B. Roessli, P. Fischer, A. Dönni, N. Wada, F. Fauth, M.T. Fernandez-Diaz, and T. Hauß
Noncollinear two- and three-dimensional magnetic ordering in the honeycomb lattices of ErX3 (X = Cl, Br, I)
Phys. Rev. B Rapid Com. 60 (1999) 3724 – 3727.

35.

C.M. Combes, P. Dorenbos, C.W.E. van Eijk, K.W. Krämer, and H.U. Güdel
Optical and scintillation properties of pure and Ce³⁺-doped Cs2LiYCl6 and Li3YCl6 : Ce³⁺ crystals
J. Lumin. 82 (1999) 299 – 305.

36.

O. Guillot-Noël, J.C. van't Spijker, J.T.M. de Haas, P. Dorenbos, C.W.E. van Eijk, K. Krämer, and H.U. Güdel
Scintillation Properties of RbGd2Br7 : Ce. Advantages and Limitations
IEEE Trans. Nucl. Sci. 46 (1999) 1274 – 1284.

37.

J.C. van't Spijker, P. Dorenbos, C.W.E. van Eijk, K. Krämer, and H.U. Güdel
Scintillation and luminescence properties of Ce³⁺ doped K2LaCl5
J. Lumin. 85 (1999) 1 – 10.

38.

O. Guillot-Noël, J.T.M. de Haas, P. Dorenbos, C.W.E. van Eijk, K. Krämer, and H.U. Güdel
Optical and scintillation properties of cerium-doped LaCl3, LuBr3 and LuCl3
J. Lumin. 85 (1999) 21 – 35.