Search for superheavy hydrogen isotopes 6H and 7H in stopped π-absorption reactions Yu. B. Gurov, B. A. Chernyshev, S. V. Isakov, V. S. Karpukhin, S. V. Lapushkin, I. V. Laukhin, V. A. Pechkurov, N. O. Poroshin and V. G. Sandukovsky Eur. Phys. J. A, 32 3 (2007) 261-266 Published online: 12 June 2007 DOI: 10.1140/epja/i2007-10388-3