Murata, Minoru, and Tetsuo Tsuchida. 2022. “Positive Solutions of Schrödinger Equations in Product Form and Martin Compactifications of the Plane”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 23 (3):1141-94. https://doi.org/10.2422/2036-2145.202005_011.