JÁNKI, Kálmán; FARKAS, M. THE USE OF AN INTERESTING PROPERTY OF IDEMPOTENT MATRICES FOR THE INVERSION OF MATRICES Periodica Polytechnica Mechanical Engineering, [S. l.], v. 15, n. 3, p. 261–270, 1971. Disponível em: https://pp.bme.hu/me/article/view/6076. Acesso em: 18 may. 2024.