1. P. M. Velichko and V. P. Shevchenko, ?On the action of concentrated forces and moments on a shell of positive Gaussian curvature,?Izv. Akad. Nauk SSSR. Mekh. Tver. Tela, No. 2, 147?151 (1969).
2. V. Z. Vlasov, ?On the theory of moment-free shells of revolution,?Izv. Akad. Nauk SSSR. Otd. Tekh. Nauk, No. 5, 55?84 (1955).
3. S. P. Gavelya, A. I. Davidov, and V. P. Skripnik, ?On the application of potential representations to the solution of boundary-value problems of the theory of shallow shells,? in:Proc. 10th All-union Conf. Th. Shells and Plates [in Russian], Metsnierba, Tbilisi (1975), pp. 51?58.
4. E. I. Grigolyuk and V. M. Tolkachev,Contact Problems of the Theory of Plates and Shells [in Russian], Mashinostroenie, Moscow (1980).
5. A. I. Danilov and G. N. Chernyshev. ?Stiffness and flexibility of shells of negative curvature used in wave transmissions,?Izv. Akad. Nauk SSSR. Mekh. Tver. Tela, No. 5, 163?169 (1978).