. ↑ r. berman, a. h. cooke and r. w. hill, "cryogenics," ann. rev. phys. chem. ( ): – . ↑ y. b. gurov, d. v. aleshkin, m. n. berh, s. v. lapushkin, et al., spectroscopy of superheavy hydrogen isotopes in stopped-pion absorption by nuclei, physics of atomic nuclei ( ) ( ): – . ↑ a. a. korsheninnikov,...