@misc{iapg602, author = {Hugentobler, U. and Schaer, S. and Fridez, P. and Beutler, G. and Bock, H. and Brockmann, E. and Dach, R. and Gurtner, W. and Ineichen, D. and Johnson, J. and Meindl, M. and Mervart, L. and Rothacher, M. and Springer, T. and Weber, R.}, title = {Bernese GPS Software, Version 4.2}, year = {2001}, month = {01}, url = {ftp://ftp.unibe.ch/aiub/BERN42/DOCU/docu42.pdf}, }