I Mech E conference publications ; 1986-4 I Mech E conference publications ; 1978-4. I Mech E conference publications ; 1979-1 I Mech E conference publications ; 1979-6. I Mech E conference publications ; 1979-7. I Mech E conference publications ; IMechE conference publication ; 1980-6. I. Mech. E. conference publications ; 1977-10 IMech E conference publications ; IMechE conference publications ;