## Vol 87, No 1 (2000)

 Complete order isomorphisms between Non-Commutative $L^2$-spaces. Yasuhide Miura 64-72
 D'Alembert's and Wilson's functional equations for vector and $2\times 2$ matrix valued functions Henrik Stetkær 115-132
 Riesz transforms on graphs for $1 \leq p \leq 2$ Emmanuel Russ 133-160