A Wintgen type inequality and characterization of hyperbolic points on surfaces sitting in the Euclidean four-space
pp. 43–67: Abstract, GZIP-PS (566 KiB), PDF (563 KiB)
Sums of two integer squares in a certain quartic extension
pp. 69–73: Abstract, GZIP-PS (311 KiB), PDF (323 KiB)
Timelike minimal surface in $\mathbb{E}^3_1$ with arbitrary ends
pp. 75–88: Abstract, GZIP-PS (458 KiB), PDF (472 KiB)