Eker S.M. A comparison of OBJ3 and ASF+SDF / S. M. Eker, 1992. - 24 p. - Текст : непосредственный.
Eker S.M. Associative matching for linear terms / S.M.Eker, 1992. - 26 p. - Текст : непосредственный.
Eker S.M. Verification of parameterised synchronous concurrent algorithms with OBJ3 : The pixel planes architecture revisited / S.M.Eker, 1992. - 17 p. - Текст : непосредственный.