“…After the original paper [6], a few further publications appeared [4], [5], [7], [8], [12], [13], and the H 1 -integral is already quite thoroughly investigated. Since the H 1 -integral is in fact a gauge integral (with the only difference in defining the limit of integral sums in slightly stronger terms), its theory helps to understand better the influence of gauges on Riemann-type integration.…”