@article{10_4064_cm115_2_9,
     author = {Daniel Simson},
     title = {Incidence coalgebras of intervally finite posets,
 their integral quadratic forms and comodule categories},
     journal = {Colloquium Mathematicum},
     pages = {259--295},
     publisher = {mathdoc},
     volume = {115},
     number = {2},
     year = {2009},
     doi = {10.4064/cm115-2-9},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm115-2-9/}
}