@article{SIGMA_2005_1_a4,
     author = {Jeffery Praught and Roman G. Smirnov},
     title = {Andrew {Lenard:} {A~Mystery} {Unraveled}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2005},
     volume = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2005_1_a4/}
}