Resolution of Hartmanis' conjecture for NL-hard sparse sets.

Jin-yi Cai D. Sivakumar Resolution of Hartmanis' conjecture for NL-hard sparse sets. 257-269 2000 240 Theor. Comput. Sci. 2 db/journals/tcs/tcs240.html#CaiS00 http://dx.doi.org/10.1016/S0304-3975(99)00234-0