editors, R. Vanselow and R. Howe. editors, C. Bonnelle and C. Mande. editors, A. Oksche and P. P鈋vet. editors, G. Giraldo and E. Beth. editors, H. Latal and H. Mitter. editors, C. Jaffiol and G. Milhaud. editors, G. von Bally and P. Greguss. editors, E. Gerlach and P. Grosse. editors, W. Gr鑥ebler and V. K鑟nig. editors, G.R. Castro and M. Cardona.