Giguere, A.; Foldeaki, M.; Schnelle, W.; Gmelin, E.: Metamagnetic transition and magnetocaloric effect in ErCo₂. Journal of Physics: Condensed Matter 11, pp. 6969 - 6981 (1999)

Grin, Y.; Baitinger, M.; Schnering, H. G.; Kniep, R.: Redetermination of the crystal structure of tertrasodium tetrahedro-tetrastannide, Na₄Sn₄ and tetrapotassium tetrahedro-tetrastannide, K₄Sn₄. Zeitschrift für Kristallographie - New Crystal Structures 214, pp. 453 - 454 (1999)

Hauf, C.; Boy, I.; Kniep, R.: Crystal structure of dimagnesium (monohydrogenmonophosphate-dihydrogenmonoborate-monophosphate), Mg₂[BP₂O₇(OH)₃]. Zeitschrift für Kristallographie - New Crystal Structures 214, pp. 3 - 4 (1999)

Hauf, C.; Kniep, R.; Pfaff, G.: Preparation of various titanium suboxide powders by reduction of TiO₂ with silicon. Journal of Materials Science 34, pp. 1287 - 1292 (1999)

Klatyk, J.; Kniep, R.: Crystal structure of alkaline earth dilithium bis(nitridolithiate/ferrate(I)), Ca{Li₂[(Li_1-xFe_x)N]₂}, x = 0,30 and Sr{Li₂[(Li_1-xFe_x)N]₂}, x = 0,46. Zeitschrift für Kristallographie - New Crystal Structures 214, pp. 449 - 450 (1999)

Klatyk, J.; Kniep, R.: Crystal structure of dicalcium (dinitriodolithiate/ferrate(I)) Ca₂{Li[(Li_1-xFe_x)N₂]}, x = 0,82. Zeitschrift für Kristallographie - New Crystal Structures 214, pp. 451 - 452 (1999)

Klatyk, J.; Kniep, R.: Crystal structure of dilithium (nitridolithiate/ferrate(I)), Li₂[(Li_1-xFe_x)N], x = 0,63. (1999)

Klatyk, J.; Kniep, R.: Crystal structure of dilithium (nitridolithiate/manganate(I)), Li₂[(Li_1-xMn_x)N], x = 0,73. Zeitschrift für Kristallographie - New Crystal Structures 214, pp. 445 - 446 (1999)

Kniep, R.; Boy, I.; Engelhardt, H.: RbFe[BP₂O₈(OH)]: Ein neues Borophosphat mit offen-verzweigten Vierer-Einfach-Tetraederketten. Zeitschrift für Anorganische und Allgemeine Chemie 625, pp. 1512 - 1516 (1999)

Kniep, R.; Schäfer, G.; Engelhardt, H.; Boy, I.: K[ZnBP₂O₈] and A[ZnBP₂O₈] (A = NH₄⁺, Rb⁺, Cs⁺): Zincoborophosphates as a New Class of Compounds with Tetrahedral Framework Structures. Angewandte Chemie, International Edition 38, pp. 3641 - 3644 (1999)

Kniep, R.; Schäfer, G.; Engelhardt, H.; Boy, I.: K[ZnBP₂O₈] and A[ZnBP₂O₈] (A = NH₄⁺, Rb⁺, Cs⁺): Zinkoborophosphate als neue Klasse von Verbindungen mit Tetraeder-Gerüststrukturen. Angewandte Chemie 111, pp. 3857 - 3961 (1999)

Köbler, U.; Hupfeld, D.; Schnelle, W.; Mattenberger, K.; Brückel, T.: Fourth-order exchange interactions in Gd_xEu_1-xS. Journal of Magnetism and Magnetic Materials 205, pp. 90 - 104 (1999)

Koch, D.; Kniep, R.: Crystal structure of sodium aluminium (monohydrogenmonophosphate-dihydrogenmonoborate-monophosphate, NaAl[BP₂O₇(OH)₃]. Zeitschrift für Kristallographie - New Crystal Structures 214, pp. 441 - 442 (1999)

Kremer, R. K.; Ahn, K.; Henn, R. W.; Mattausch, H.; Schnelle, W.; Stolovits, A.; Simon, A.: The rare-earth metal carbide halide superconductors RE₂C₂X₂ (RE = Y, La; X = Cl, Br, I). Physica C 317-318, pp. 456 - 459 (1999)

Ludwig, M.; Niewa, R.; Kniep, R.: Dimers (Al₂N₆)^12- and Chains ¹_∞ (AlN ^3-_4/2) in the Crystal Structures of Ca₆(Al₂N₆) and Ba₃(Al₂N₄). Zeitschrift für Naturforschung B 54, pp. 461 - 465 (1999)

Pöttgen, R.; Hoffmann, R.-D.; Kremer, R. K.; Schnelle, W.: Structure and Properties of Nd₅Ni₆In₁₁. Journal of Solid State Chemistry 142, pp. 180 - 186 (1999)

Ramlau, R.; McCarley, R. E.; Simon, A.: High-Resolution Electron Microscopy Investigations on the Real Structure of Reduced Barium Oxomolybdates. Journal of Solid State Chemistry 142, pp. 89 - 99 (1999)

Schnelle, W.; Engelhardt, J.; Gmelin, E.: Specific heat capacity of Apiezon N high vacuum grease and of Duran borosilicate glass. Cryogenics 39, pp. 271 - 275 (1999)

Schnelle, W.; Gmelin, E.; Crottaz, O.; Schmid, H.: LOW TEMPERATURE SPECIFIC HEAT CaPAXITY OF 3d TRANSISTION METAL CHLORINE BORACITES (T₃B₇O₁₃Cl; T = Cr, Mn, Fe, Co, Ni, Cu, Zn or Mg). Journal of Thermal Analysis and Calorimetry 56, pp. 365 - 370 (1999)

Suchanek, E.; Lange, N.; Auffermann, G.; Bronger, W.; Lutz, H. D.: Raman Spectroscopic Studies on Palladium and Platinum Hydrido Complexes. Journal of Raman Spectroscopy 30, pp. 981 - 986 (1999)