OBSERVATION OF STRUCTURES IN THE 4-PION INVARIANT MASS IN ANTIPROTON-HE-4 ANNIHILATION AT REST (OBELIX DATA, PS201 EXPERIMENT AT LEAR) / ADAMO A; AGNELLO M; BALESTRA F; BELLI G; BENDISCIOLI G; BERTIN A; BOCCACCIO P; BONAZZOLA GC; BRESSANI T; BRUSCHI M; BUSSA MP; BUSSO L; CALVO D; CAPPONI M; CORRADINI M; COSTA S; DECASTRO S; DISEP F; FALOMKIN IV; FAVA L; FELICIELLO A; FERRERO L; FILIPPINI V; GARFAGNINI R; GASTALDI U; GIANOTTI P; GRASSO A; GUARALDO C; IAZZI F; LANARO A; RIZZINI EL; LOMBARDI M; MAGGIORA A; MARCELLO S; MARCONI U; MARGAGLIOTTI GV; MARON G; MASONI A; MASSA I; MINETTI B; MORANDO M; MORGANTI M; PANZIERI D; PAULI G; PICCININI M; PIRAGINO G; POLI M; PONTECORYO GB; PUDDU G; RICCI RA; ROTONDI A; ROZHDESTVENSKY AM; SALVINI P; SANTI L; SAPOZHNIKOV MG; SEMPRINICESARI N; SERCI S; TEMNIKOV P; TOSELLO F; TRETYAK VI; VANUCCI L; VEDOVATO G; VENTURELLI L; VITALE A; ZENONI A; ZOCCOLI A; ZOSI G. - In: SOVIET JOURNAL OF NUCLEAR PHYSICS. - ISSN 0038-5506. - 55:6(1992), pp. 806-810.