(Koln)International Symposium "Gasdynamic and Chemical Lasers" International Symposium "Gasdynamic and Chemical Lasers" Sid international Symposium Disgest of Technical papers Sid international Symposium Digest of Technical papers International Symposium on Dynamical Systems International Symposium on DynamicalSystems International Symposium on microchemical techniques International Symposium on Microchemical Techniques 1982 international symposium on circuits and syste (Boston)International Symposium on Chemical heaction Engineering