“…Regarding the notation, the field quantities in the form A I , A II in (8) and the rest of the paper denote the limiting values of a vector A as one approaches on a point on S from the related regions, while the subscripts t and n indicate the components of any field quantity tangential and normal to S which satisfy A = A t +nA n = (n × A) ×n +n(n · A). The relations (8), (9) were first introduced byİdemen in [6,7] for the special case of a planar interface. In virtue of Theorem A3, the fields (6) are supposed to possess singularities of finite order which also renders the dimension of the sets of the compatibility equations finite and consequently yield the following theorems regarding the orders of singularity on an arbitrary material sheet.…”