In German, his writings on intersubjectivity are gathered in volumes 13–15 of the Husserliana. In English, his best-known text on intersubjectivity is the Cartesian Meditations (it is this text that features solely in the Husserl reader entitled The Essential Husserl). Although Husserlian phenomenology is often charged with methodological solipsism, in the fifth Cartesian Meditation, Husserl attempts to grapple with the problem of intersubjectivity and puts forward his theory of transcendental, monadological intersubjectivity.[7]