TY - JOUR A1 - Schulz, Günter A1 - Braun, Michael A1 - Geissler, Heinz T1 - Contributions to the structural and chemical composition of plasma chemically synthesized silica powders Y1 - 1995 ER - TY - JOUR A1 - Schulz, Günter A1 - Geissler, Heinz A1 - Braun, Michael T1 - Properties of plasma silica powders used to SAPO molecular sieve synthesis Y1 - 1995 ER -