Varia︠t︡sii magnitnogo pol︠i︡a i pol︠i︡arnye si︠i︡ani︠i︡a : [Sb. stateĭ] - Felʹdshteĭn, ︠I︡A. I. (︠I︡Akov Isaakovich) (IZMIRAN, 1977)