P. Abelard, J. Baxter, D. Bortzmeyer et al.
P. Badica, G. V. Aldica, V.V. Morozov, A.F. Alexeev, T.Y. Gridasova, "The Influence of Synthesis Environment and Time on Volumetric Characteristics of BSCCO Superconducting Ceramic Obtained by Spray-Frozen, Freeze Drying Technique", Key Engineering Materials, Vols. 132-136, pp. 1231-1234, 1997