Relaxation methods in engineering science: a treatise on approximate computation - Southwell, Richard Vynne 1888-1970 (London: Oxford University Press, 1940)
vol I- A tratise on aproximate computation vol II- Relaxation methods in theorical physics vol III- Continue to relaxation methods in theorical physics
Keywords: CALCULO DE DIFERENCIAS FINITAS; EIGENFUNCTIONS; RELAXATION METHODS (Mathematics); VIBRATIONAL STATES; ELASTICIDAD