@article{Piserchio:1962iza, author = "Piserchio, R. J. and Kalbach, R. M.", title = "{Proton-proton collisions at 3.5 GeV}", doi = "10.1007/BF02781798", journal = "Nuovo Cim.", volume = "26", number = "4", pages = "729--739", year = "1962" }