A. V. Rudkevich, V. G. Dvoretsky, V. B. Ivanov, B. A. Kanashov, Yu. V. Markov, V. M. Rayetsky, T. A. TemnoyevaVANT. Ser. Metodiki i Programmy Chislennogo Resheniya Zadach Matematicheskoy Fiziki 1984. No.2. С. 47-56.
A. V. Rudkevich VANT. Ser. Metodiki i Programmy Chislennogo Resheniya Zadach Matematicheskoy Fiziki 1988. No.3. С. 79-85.