Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales / A Volume 118 Issue 3 Issue 2 Issue 1 Volume 117 Issue 4 Issue 3 Issue 2 Issue 1 Volume 116 Issue 4 Issue 3 Issue 2 Issue 1 Volume 115 Issue 4 Issue 3 Issue 2 Issue 1 Volume 114 Issue 4 Issue 3 Issue 2 Issue 1 Volume 113 Issue 4 Issue 3 Issue 2 Issue 1 Volume 112 Issue 4 Issue 3 Issue 2 Issue 1 Volume 111 Issue 4 Issue 3 Issue 2 Issue 1 Volume 110 Issue 2 Issue 1 Volume 109 Issue 2 Issue 1 Volume 108 Issue 2 Issue 1 Volume 107 Issue 2 Issue 1 Volume 106 Issue 2 Issue 1 Volume 105 Issue 2 Issue 1 Volume 104 Issue 2 Issue 1 Volume 103 Issue 2 Issue 1 Volume 102 Issue 2 Issue 1