Open Access
GIF89a{3f++3+f+++UU3UfUUU3f3f3fՙ3f3333f3333+3+33+f3+3+3+3U3U33Uf3U3U3U3333f3333333f3333333f3ՙ333333f333ff3ffffff+f+3f+ff+f+f+fUfU3fUffUfUfUff3fffffff3fffffff3fffՙffff3fffff3f̙++3+f++̙+UU3UfUU̙U3f̙3f̙3fՙ̙3f̙3f++3+f+++UU3UfUUÙ̀3̀f̪̪̀̀̀3̪f̪̪̪3fՙ3f3f++3+f+++UU3UfUUU3f3f3fՙ3f!,{ H*\ȰÇ#JHŋ3jȱǏ CIɓ(S\ɲ˗0cʜI͛8sɳϟ@ JѣHJT&FҧPJ)ʔe8֩`ÊlEBbb`3uK.] PV0}{ PV+6$Aw)U'+g g#j ΰc1Ǎ00p_1PTY+V@cAh=0rË[`UeN}ҤU$wRMQ9AŠ^evmoE(afu@zu' IP 4thA tf&@FBXg!c) "UIdyUdA74&O9Gt+X]hjs[2exM>NpUpNU_i1 #1ܰn7ɟb(硱YPVe'/9$"iFtbD~d`anjCncY^*kCfdjDD+"kB,Mceatddiړ\h4{ߺа jO&}ŊJõiݶy+x-}llplF?2uEPMۯfw {h·>i u$Y_i:U㼧x؊eB-+sہ]wUGJRK \!B5>yЈUkP+四j1YuIYe#zDhULu+u(7uzRݓjX..d'DR^̓\ACZe~1FӍiS  pn`^3ui-!=OهOca>J#q[O_/kߑWR$@@It- '(-9Q7hjq/Gh&  Wxd0 IbHËd|5aD@P])!hȐXL, 81*Z =" Ep!|zB2ѪM#bд!*DL*Lst5&w "H3P 4CBꈋ+eB92N _#p4ZZKb҈MɛoH$5h:WpД;j_(;R2LZhMjߏrK\iʺ#8bDf2($1m$Ьz!h\R)14-k|b)42Qfk,>Ds?>aȌRlcsH-ݦD仪\i78idR ) R%rTZZ4 ~dEhvyaF7C wdr#A \CP#AFGO7*x,P*#Ѷ8|B`vÐ(#c~ʑ=!A>9UU]"S\[I7SCJcLpaO"ʩZ=gHAyMN5!p8R'nt.90d.3Ul(bvbFL7AcAy6;B}\g'- y63 +5#|pک@'S๐IF9 ~Zʄ,#Ȁ1YnWTN$yYP}V 7@lk{W2^@jb$\ +{sRXHYrf:Np[/L9}w `DJ )e,1^ ȻBrL#)W3QCtMnInHiډ϶XNq1؅ѐ3YH+meK5 r0= ˅ܰ)Fe,m]ObB^ [Y ,e25LBDldMg[v6P]\=YN,:!8 ԅők 2/.p 4ڽA`8# B˝!P ӏ+1g=2kE~7ߚZ8t>ŬGccqǕihRR,1h nU"O˄!fk E#GRn±i頫<6}V R'heHD/`&oQ xsj?,:NaBȮvh9wᣫ2 Tikl,JаS(kS^[Ž0R2( Akfө;ۗMǥ|n8^xLcfD  4AjI3hA*R#)#7EZSHؖli{)S?Byc +V&; U!($khE S/ nao}1&B8868(Tfq|0w 2)ae&Q0@Bx1(}&2E$/=c@-,8pq@ 'R&7xv#oS1P)'w*OhO8U;eӅ5]7%ZЂ0"/i'gBEb?rFA`8}{%|DyxAap?bKQ||{hEqxZaFR}%:'7KnDa7cH'EJE(ޘKH#$"00rQ#!QD8M10vth(b"# רtUb%#Wؑd ><ԍ# =І',ْ.029*;

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.