E. Burk

Polyurethanes from the reaction of 5,5′-tetramethy lenedi-(1,3,4-dioxazol-zdne) with glycols

L. G. Wolgemuth, E. Burk, 1973 .

The Synthesis of Pyrrolizidines. VII. Use of the Pyrrole Mannich Base

N. Leonard, E. Burk, 1950 .