1.

Conference Proceedings
Conference Proceedings
1. Multiwall thermal protection system: engineering aspects
Grallert, H. ; Keller, K.
Pub. info.: Space applications of advanced structural materials : proceedings of an international symposium organised by the European Space Agency and held at ESTEC, Noordwijk, the Netherlands, on 21-23 March 1990.  pp.227-232,  1986.  Noordwijk.  ESA Publications Division
Title of ser.: ESA SP
Ser. no.: 303
2.

Technical Paper
Technical Paper
2. Generic derivation of a promising air-breathing TSTO space transportation system - from SAENGER to FESTIP -
Grallert, H. ; Herrmann, O.
Pub. info.: A collection of technical papers.  pp.242-251,  1998.  Reston, VA.  American Institute of Aeronautics and Astronautics
Title of ser.: AIAA Paper : International Space Planes and Hypersonic Systems and Technologies Conference
Ser. no.: CP9804