1. On an invariant of a simple graph (Russian), Graph Theory;Abramjan,1977
2. A programme logic for listing of sigraphs, their characteristic polynomials, and their spectra, Abstract;Acharya;Graph Theory Newsletter,1979
3. Spectral criterion for cycle balance in networks;Acharya;J. Graph Theory,1980
4. A graph theoretical expression for the characteristic polynomial of a matrix;Acharya;Proc. Nat. Acad. Sci. India,1980
5. Paving the chessboard;Ahrens;J. Combin. Theory (A),1981