Sommaire

On Riečan and Bosbach states for bounded non-commutative $R\ell $-monoids
p. 487
Sequential convergences on pseudo MV-algebras
p. 501
Riemann average truth-value of Łukasiewicz formulas
p. 511
Sharp and fuzzy elements of an RC-group
p. 525
Asymptotic criteria for designs in nonlinear regression with model errors
p. 543
Spectral resolutions for $\sigma $-complete lattice effect algebras
p. 555
An order for quantum observables
p. 573
A formal analysis of musical scores
p. 591
Professor Beloslav Riečan, septuagenarian
p. I