1. In press th Int To be pubijshed Chimia Toube an;Hertzberg;Proc Acta Cryst Chem Soc,1972
2. B To be published;Andrewes;Acta Chem Scand B Acta Chem Scand Acta Chem Scand B Acta Chem,1974
3. Scand In press;Arpin;Acta Chem Scand Acta Chem,1972
4. Proc nd Int Carot Symp and Scient Hung th;Szabolcs;Acta Chem Scand Chem,1972
5. Scand In press;Arpin;Acta Chem Sctind,1972