of T.Furuya's paper.

of S.Hanata's, M.Takahashi's and A.Nagase's paper.

of Ann Adam's, P.Gloess' and J.-P.Laurent's paper.

of T.Kunitachi's and T.Yoneda's paper.

of T.Hirota's, K.Agusa's and Y.Ohno's paper.

of T.Chusho's paper.

of H.Umeno's, K.Ohmachi's, A.Hino's and S.Takasaki's paper.

of J. L. Keedy's paper.

of F. O'Brien's paper.

of F.Andre's, J.P.Banatre's, H.Leroy's, G.Paget's, F.Ployette's and J.P.Routeau's paper.

of L.Dewez' and A.Grand's paper.

of C.Gaude's, C.Kaiser's, J.Langet's and S.Palassin's paper.

of A.J.Jammel's, H.G.Stiegler's and P.A.Vogel's paper.

of G.Valdorf's paper.

of H.Miyabe's and S.Noguchi's paper.

of K.Mikami and A.Fusaoka's paper.

of M.L.Tavera's and M.Alfonseca's paper.

of M.L.Tavera's paper.

of M.Arisawa's paper.

of B.Daecker's and S.Torstendahl's paper.