Constraints on spin observables inElchikh, Mokhtar; Richard, Jean-Marc · Physical Review C · 2000

Constraints on vector meson photoproduction spin observablesKloet, W. M.; Tabakin, Frank · Physical Review C · 1999

Positivity Constraints on Initial Spin Observables in Inclusive ReactionsSoffer, Jacques · Physical Review Letters · 2003

Model-independent constraints on spin observablesRichard, Jean-Marc; Artru, Xavier; Elchikh, Mokhtar; Soffer, Jacques; Teryaev, Oleg · Chinese Physics C · 2009

Positivity constraints on spin observables in hadronic inclusive reactionsBourrely, Claude; Soffer, Jacques · Physical Review D · 2007

Constraints on spin observables in p̄p→ΛΛJean-Marc Richard; Xavier Artru · 2004

Observational constraints on the spin of the most massive black holes from radio observationsAlejo Martínez-Sansigre; Steve Rawlings · 2011