On kaonic hydrogen. Phenomenological quantum field theoretic model revisitedA. N. Ivanov, M. Cargnelli, M. Faber, H. Fuhrmann, V. A. Ivanova, J. Marton, N. I. Troitskaya and J. ZmeskalEur. Phys. J. A, 25 3 (2005) 329-338DOI: https://doi.org/10.1140/epja/i2005-10128-9